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Sumo Reviews 

3,097
TrustScore 3.5 out of 5

3.7

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Review summary

Created with AI, based on recent reviews

Looking at 89 reviews, most reviewers were somewhat happy with their experience overall. Consumers generally appreciate the helpful and polite staff members who take the time to explain things clearly and resolve various inquiries efficiently during phone calls. Many people also value the convenient call-back service, which successfully allows customers to avoid staying on hold for excessively long periods of time. Some reviewers were not happy with extremely long wait times and unresponsive communication when trying to reach customer support over the phone. A few other people also felt that sudden rate increases, unexpected tariff jumps, and significantly high billing charges were quite frustrating experiences.

What people talk about most

Customer service

Reviewers highlight ambiguous aspects of customer service, with experiences varying dramatically from highly... See more

Staff

People report positive experiences with staff, highlighting their professional, friendly, and knowledgeable... See more

Service

Consumers find experiences with the service to be highly mixed and divided. While some reviewers praise the... See more

Price

Customers had ambiguous experiences with price, as some consumers found affordable rates and savings, while... See more

Response time

Users describe profound frustration with response times, consistently reporting excessive waits of over an... See more

Reviews shaping this summary

Rated 4 out of 5 stars

Customer service operator was friendly and helpful and solved our issue straight away. It was slightly difficult to understand his accent. He offered a newer, cheaper rate and package. I felt it's a b... See more

Rated 4 out of 5 stars

Although the wait time was too long, hence 4 stars instead of 5, Michael from accounts was supremely helpful. He was extremely knowledgeable and solved several issues for me. Michael was also friendl... See more

Rated 4 out of 5 stars

Helped out by the very professional and polite Justin. Once I jumped through the many anticipated hoops, he assisted me with my inquiry and sorted out my form filling efficiently.

Rated 5 out of 5 stars

The customer service agent who took my call answered my query clearly and had exceptional customer service skills. By coincidence, I happened to speak with the same person the other week as well and... See more


Company details

  1. Energy Supplier
  2. Housing Utility Company

Written by the company

Proudly Australian-owned and operated, we are passionate about understanding the needs of households and small businesses. That's why our model is built on better value, simplicity and a broader product range.


Contact info

3.7

Average

TrustScore 3.5 out of 5

3K reviews

5-star
4-star
3-star
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1-star

No recent history of asking for reviews

This company hasn't invited customers recently, so reviews may not be representative

Replied to 26% of negative reviews

Typically replies within 2 weeks

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3.7

All reviews

(3,097)

85 reviews in the last 12 months

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Rated 2 out of 5 stars

Unable to get a call answered

I'm trying to get through to *anyone* at Sumo for a simple query. So far, I've been sitting on hold for 5 hours, 10 min - spread over 2 days, with three "press 1 to get a call back" requests ignored.

My last spot in the queue ran for 2 hrs 7 minutes then cut out.

Now I'm persisting in the queue for the LOLs.

4 September 2026
Unprompted review
Rated 5 out of 5 stars

Michael is a star!

Michael was supremely helpful and really took a lot of trouble to find the solutions I needed. He embodies all the ideals of great customer service: he was knowledgeable; professional; kind and friendly. It was a real pleasure talking to him and I don't see how anyone could ever be better than Michael!

28 August 2026
Unprompted review
Sumo logo

Reply from Sumo

Hi Marianne! Thank you for such generous feedback. Thank you for sharing how friendly the team was, and we're delighted it reflects the standard we aim for. We look forward to continuing to earn that kind of trust.

Rated 5 out of 5 stars

Only giving 5 stars because 20 wasn't…

Only giving 5 stars because 20 wasn't an option.

I've been in a tough position financially for the past 2 months. I called to see if I could organise a payment plan for a large gas bill that was going to put me in an even worse spot. I expected to organise a payment plan with an agent who was indifferent to my situation, as I've come to expect from other retailers.

I was pleasantly surprised when I instead got Michael. While assisting me with setting up a payment plan he informed me about the VIC gov energy grant for people going through hardship, then did all of the busy work to apply for me. On top of that, he set up the concession card discounts on my account which I didn't even know about (due to my own neglect in reading the sumo deals).

I expected to end up having to pay the full amount over time and still take a hit that would see me eating nothing but bread and 2 minute Noodles for the next 2 months. Instead I walked away with the bill being covered and enough money left in my pocket to help me get through this tough time.

I can't thank you enough and Michael should be promoted, or get a raise, or at the very least a employee of the month if thats a thing.

27 August 2026
Unprompted review
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Reply from Sumo

Hi there Benjamin! Thank you for your generous feedback. We're hoping to continue that experience and improve where we can, so this is greatly appreciated!

Rated 1 out of 5 stars

Sumo - Worst Customer service

Worst service provider I've dealt with. The payment link in their email didn't work, so I had to use the alternative online payment option. After paying, I only received a receipt number—no payment confirmation email or acknowledgment. I then tried contacting customer service, but after waiting on hold for over an hour, nobody answered. My bill is due tomorrow and I still have no confirmation that my payment has been processed. Extremely poor customer service and a frustrating customer experience. I would not recommend Sumo.

27 August 2026
Unprompted review
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Reply from Sumo

Hi there Vel, we apologise for the experience you've described. This falls well short of what we expect our customers to experience. If it hasn't already, we'll make sure your payment is verified and this matter is properly resolved moving forward to ensure a much more positive experience. Our team is working hard and will be notified of this issue.

Rated 1 out of 5 stars

One of the worst sign-up experience you…

One of the worst sign-up experience you will encounter. They don't answer your call at all even after 90 minutes of waiting. When you log a call back request, they don't even make at attempt to call you back. it just chucked somewhere. When you fill up their form, they replied asking you if you have filled in the form correctly and ask you to return call with a given reference number. And guess what, nobody will pick up the call at all.

27 August 2026
Unprompted review
Sumo logo

Reply from Sumo

Hi there, we apologise for the frustration caused during your sign-up process. Our team is working hard to support every customer to the best of their ability. Thank you for your feedback, we will ensure this matter is followed up on our end.

Rated 1 out of 5 stars

Tried for disconnection

Tried for disconnection. Wasn't listed to, kept getting emails & bills. Got the ombudsman involved still got bills even though it was stated that I wouldn't & electricity/gas would be disconnected. Still connected. NOT HAPPY JAN!

15 June 2026
Unprompted review
Sumo logo

Reply from Sumo

We apologise for this frustrating situation. We'd like to look into this properly on our end. If you're able to reach out to us directly with your account details, the team will do their best to get it sorted as quickly as possible.

Rated 1 out of 5 stars

I have just changed to a battery for my…

I have just changed to a battery for my solar home system and I’m with Sumo so rang them waited 55 mini for someone to answer nothing pressed 1 for a call back nothing. Rang again next day same response. Have tried to log on to my Sumo account with my email address sumo does not recognise my email address even though they send me a bill to my email every month help!!!!!’ Go figure

20 August 2026
Unprompted review
Sumo logo

Reply from Sumo

Hi Dennis, we apologise for the difficult experience you've had. Our team is working hard to support every customer at the best of their ability. Thank you for your feedback, we will ensure this matter is followed up on our end.

Rated 1 out of 5 stars

Worst customer service I have ever…

Worst customer service I have ever experienced. On hold for 40minutes when trying to cancel my policy.

5 August 2026
Unprompted review
Sumo logo

Reply from Sumo

Hi there Sue, we apologise for the experience you've had. This falls short of what we expect our customers to experience. Our team is working hard to get back to customers as quickly as possible. Thank you for your feedback.

Trustpilot is assessing this review in accordance with our flagging process.

Rated 5 out of 5 stars

Great customer service

Great customer service! Michael explained everything in detail & was very helpful. His help was very much appreciated

12 August 2026
Unprompted review
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Reply from Sumo

Thank you for the review, Rebecca. It's good to know you had a positive experience with our team! We appreciate your time and your feedback.

Rated 1 out of 5 stars

Very poor service

Very poor service. Customer service is pathetic. They say that their business hours are between 9 am to 5:30pm but stop answering calls at 4 pm.

7 August 2026
Unprompted review
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Reply from Sumo

Hi Doyson, we're sorry you had a negative experience trying to get through to us. Our business hours are from 9am-5pm, and our team are always available to speak to customers during these hours. We thank you for your feedback.

Rated 1 out of 5 stars

Be aware of the Sumo website

Be aware of the Sumo website. When you select an electricity plan, it changes the tariffs and rates one the next window. Check to make sure it's not ripping you off by doing a sneaky rate change. Gotta love power companies...

6 August 2026
Unprompted review
Sumo logo

Reply from Sumo

Hi there Simon, thank you for raising this. The rates shown shouldn’t change unexpectedly during sign-up. What you've described sounds like a bug, and we have escalated this internally for further investigation. Thanks again for taking the time to bring this to our attention.

Rated 1 out of 5 stars

I am appalled by the customer service…

I am appalled by the customer service at Sumo. I contacted them – I spent an entire morning waiting to speak to a customer service person – to arrange for my electricity to be disconnected Monday third of August. I now have a tenant in the property – they moved in yesterday 5th August. Sumo did not disconnect the power as promised and I’m concerned that I’m paying still paying for the electricity – I have spent in more than two hours yesterday and today trying to contact Sumo by telephone – I am going to the ombudsman about this. I’ve had problems with other accounts when I have taken on commercial shops and have had to go to the Ombudsman to get them to sort out Sumo‘s inefficiency - this is a really inefficient company and in the past I have had customer service officers been quite rude to me. I will never deal with them again.

6 August 2026
Unprompted review
Rated 5 out of 5 stars

my call was handled really well.

my call was handled really well.
the call taker was extremely helpful and very pleasant to talk to.
she has given me some options which will assist us in handling our Sumo bills in the future

4 August 2026
Unprompted review
Sumo logo

Reply from Sumo

Thank you for taking the time to leave a review, Jim. It's good to hear the call went well and that you've come away with a positive experience

Rated 1 out of 5 stars

Horrible.

I spent over 5 hours on hold today (Monday) and we haven’t had any power since Friday. It is Melbourne winter and with no power we also have no access to gas as the pilot light went out and only way to re-light it is with electricity. This is unacceptable. I am extremely disappointed in their contact options. I would not go with them if you ever want support or to talk to someone about an urgent matter. The only excuse they gave me after over 5 hours and missing my shift, no heating, no ability to cook or keep good in the fridge, was that they have a new cheap offer so there is lots of calls. I am so unhappy.

3 August 2026
Unprompted review
Rated 5 out of 5 stars

Shannon has excellent customer service :)

Shannon was very polite and friendly as he helped me set up payment assistance. I really appreciate it, especially the time he was willing to help me with a form over the phone. Fantastic customer service, thank you.

3 August 2026
Unprompted review
Sumo logo

Reply from Sumo

Thank you for taking the time to leave a review, Netta. It's good to hear that setting up payment assistance was a smooth experience and that you felt well supported throughout. We'll make sure the feedback is passed on to the team.

Rated 5 out of 5 stars

Sakti is top-notch

Sakti is top-notch! He was extra helpful and relentless and finding a solution to my concerns. Very well done Sumo team!

29 July 2026
Unprompted review
Sumo logo

Reply from Sumo

Really pleased to hear that, Dax. It's good to know your concerns were worked through properly. Thanks for taking the time to leave a review.

Trustpilot is assessing this review in accordance with our flagging process.

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