I know that some trader it's not satisfied by the Bittrex service, but try to understand, they have alot of email from traders, and maybe your email will be read in 2-3 months or maybe nobody will be assigned to your ticket.
The most important thing to do is upload correctly the documents, and if it ends with the block of your account for a wrong id verification you should contact the service that check the documents.
If you want, write down this post your telegram name, the only thing that i can do for you is checking all the procedure and see if something different can be done