everyone contact bittrex get their attention...im on it.... Support@Zendesk
Don't mail support@zendesk! They are not the people you want, trust me.
I accidentally emailed them requesting an e-mail change for my account, yup massive slip up there. (gave all my info as Bittrex requires that for changes to accounts)
If I were you I'd join the IRC chat #Bittrex on freenode.
And yes I'm aware that's the email they give you on their contact/support page I don't know why it's there either.