You're not the only one having problems with YoBit. I'm also waiting for an answer from support for over a week now.
My (and other) NLG wallet is in maintenance for over a week. And yep, I'm also banned from chat. I guess I was a bit unpolite but that's because they just won't listen to complaints.
On his other thread, he said that the problem is resolved after sending a PM to =>
https://bitcointalk.org/index.php?action=profile;u=406594PM him and try your luck too.