Did this issue ever get resolved?
Bittrex support has sucked for me as well. over 30 days and still trying to get a deposit that was below the minimum balance and got put in a "hot wallet" and I was told that the Ether in this below minimum hot wallet would be deposited once I had a deposit of more than .1 ether. Well I had several deposits, I had several deposits to my Bittrex account and the 0.003032288617702064 Ether is still locked in there as you can see at this link.
https://etherscan.io/address/0x92ae73a5b515f995e41b0c4ce82de8be9e031eaa. and my wallet on Bittrex shows only .00000008 ETH.
The last email I got from support, TODAY, said and I quote.
"Hi.
Please send me your transaction id/hash, without it we can not lookup your coins. BTW everything you ever send have already been credited please look below.
"
screen shot of deposits and withdrawals....
How the hell can they not see the balance? These guys are completely worthless. I have given them the transaction HASH many times, in other tickets, but they keep closing them out even though I am replying to this. I am getting tired of these jerks, but it doesn't sound like Polenix is any better.....