~snip
I don't understand how they can rob people in this way.
Why you are saying they rib people in this way? We all know that bittrex is one of the large crypto exchange in the world. I think they have more reputation and they don't try to rib people since as a large exchange. They just trying to maintain crypto regulation and want to provide high security for the trader.
Since they have already locked your account so you must pass the KYC verification to In motion your account again. Just skip KYC if you have little balance which you can consider Or if you have a high amount in the exchange then you should pass the KYC to save your balance IMO. Good luck dear!