Low value for money
I've been traveling with NS for a while.
Incremental delays, train cancelations mid-trip, check-out glitches (causing the checkout not being registered), super unclean trains post-events,
very poorly handled forgotten items, I experienced them all...
Yet it's one of the most (if not the most) expensive public transportation in the world.
Trustpilot scores are terribly low, yet they don't nothing about it.