The ESA Saga: Dodgy Decision Making (it is not just Atos) - a long and detailed complaint
I'd have prefered to have said this to somebody's face, but the guilty parties are well protected. Likewise, I'd like to have seen him say what he said over the phone to my face without turning his head away in disgrace. It'll be interesting to see if I get a reply - nothing yet.
If you are faced with your first WCA, go well prepared and be on your guard. Their underhand and devious approach to this almost encourages dishonesty from claimants - what a way to run a business!!!
There's plenty of stuff here and on other sites to tell you more. Good luck, although ironically this is far too important to trust to luck.