Welcome to clown town
Do your research before you sign up for anything.
Sales techniques I would expect from people selling pots door to door. Pushy, relentless, akin to midges but perhaps even more annoying. Also people, please, go online and price up some triple glazed windows, you will realise you can pay about 80% less (for triple glazed, compared to these guys who only do double glazing!) and getting tradesmen to fit it for you is cheap and simple.
What happened:
Quote for 6 windows and a door - 18k (priced up all the windows and doors online, £3500) - long term quote we can sit and think about
Followed by a charade about them making you a deal using you for their marketing and calling the manager, what a theatrical performance about kindergardens in neighbourhood etc.
That got it down to 14k - but we must sign right now.
Got a bit upset and super pushy when we told the wee bloke we need to think about it.
Called the manager again, the price was now down to £8000... Must sign today, we won't get that price later..
If there is something I do not appreciate, it's pushy, heavy handed sales tactics. Any company pressuring me to sign something on the spot and not leaving time to decide feels beyond fishy to me. Sent the wee bloke packing..
Day later non stop calls from their office, again, super pushy woman on the phone, "we want to come again, direct from factory, we are in your area today.. no, can't be tomorrow blablabla..."
For the sake of entertainment we agreed to see their sales manager who came to visit, as heavy handed sales approach as from the wee bloke as soon as he started to realise we are not pushovers and might not be signing today... Price now down to £7000
Do yourselves a favour, hire actual professionals, or better yet measure the windows, get them made yourselves, get a real tradesman to fit it and save £10.000....