This thread should be moved to Service Discussion under Exchanges. Admins of Bittrex already addressed this but I guess theres just too many tickets opened for a few support staff to handle. They even asked those who opened multiple tickets for the same issue to lower down the number of pending tickets but I still can see complaints about accounts still closed. Reach out to Richie in twitter and tag bittrex official twitter account too when you raise your issue.
That's why folks, I never keep my coins in an Exchange. Aside from the fact that the Exchange can do whatever they want with your account the risks of beeing hacked or losing all your coins due to closure of the exchange are high as well. I hope your issue will fix soon guys.
That's easy for you to say not to keep your coins in an exchange but just think of how much you will lose if you dont have enough funds in the exchange site and you still need to transfer funds to place a buy order. Maybe once the transfer is confirmed, opportunity lost already.