I love Bittrex! I don't really understand why but it seems to be a lot less popular than some other major exchanges, but I've used pretty much all of them and Bittrex is by far my favourite. Thankfully, I've never had an issue like yours but it's nice to know their support team is just as awesome as their platform!
If you ever wanna chat crypto hit me up @jhcooper7
Steem on!
bittrex is definitely on the rise. Poloniex isnt very trustworthy currently.