i gave up and thought to put it here so at least people will be careful. watch out for the exchanges all they want is to be the big boys and they do not care for bitcoin or what its suppose to be used for they just care about whatever they are trying to do.
You are not the first and you definitely won't be the last to have your coins locked in an exchange which is making unreasonable or impossible demands in return for unlocking your account. This is the risk you take when you use any centralized exchange. Although this is certainly more commonly seen in people using non-KYCed accounts, there are still plenty of people who are using fully KYCed accounts and yet still find themselves having their accounts locked and facing demands for ever more invasive KYC, bank statements, pay checks, proof of funds, etc.
Unfortunately your warning will not prevent anyone else from falling victim to this, just as all the other warnings from all the other people with locked accounts did not prevent you falling victim to this. People simply do not care about all the horror stories from other users. People don't care until it happens to them personally, by which point it is obviously too late. As I've said many times before, it is pitiful on the part of the whole community that we keep using and supporting exchanges which do this, allowing them to continue to rip off and scam other users.