My account disabled too with no any reasonable reason.
About week support not response. And I can't spent my BTC on account when damp is come.
So, I think bittrex just steal my money! No any excuse for them.
1. Did you verify your account before transferring any BTC into it?
2. Did you send them identification docs?
3. Did you set up the two factor verification?
Please tell me more because I am curious why they are freezing accounts. thank you.