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.

Have BTC withdrawal problem on cryptsy for past few weeks 
Send BTC out, waiting in "pending" status, send ticket, get response (sorry, we will fix it), send ticket again - withdrawal canceled and repeat it again and again . Sometime with result, sometime - not.
Amounts~ 0.05 - 0.08 BTC
Now trying this with DASH - same shit.
mt.gox detected