Absolutely everything that Bittrex does is by the books and completely transparent. I can assure you they are the very last exchange that would ever intentionally cause harm or do wrong by anyone for the sake of profit, no matter how big or small. They almost always respond to tickets within 24 hours. You're welcome to join the bittrex Slack team. Maybe one of the guys on there will be active and able to look into the situation.

To get an invite to there slack you can go to: http://slack.bittrex.com