Bittrex not scam but has a limited employees for support tickets. and lack of communication from their owners. not the best policy but not scam.

My acc has been upgrade today and i can withdrawn my all money from there.

my suggestions that:
1. open one ticket. dont open multiply ticket cause you have putted to bottom line of requests.
be polite and informative. your ticket contains all necessary info about your problem.
2. be patient . wait for a while your request going to solved by support. I did not got any message but my problem solved.
3. if your problem is still exists after 10-14 days or more. send messages to bittrex employees on their official twitter channel . dont bagging them just sen a reminder with your unsolved ticket number. iv sent messages to all bittrex employees once and another to channel. and some reply to their posts. dont bagging them . reminds them only with a few message.

My originally problem was error on verification process 20 days ago. after a little time turned the message to name mismatch error and iv created a follow up ticket on original ticket  3 days ago and today my acc is enhanced finally.

Good luck