Why no one from Yobit is answering here? No Admin, No Mods? Surprised!
Above all its a scam accusation against Yobit.

I believe that, not everyone, not everything is 100% perfect. So their customer service is slow.
But I have always received quick response from them..

Do you talked with chat mod "domini" he is always active..

From my beginning I am using Yobit without any issue.
Though it doesn't requires me to withdraw other coins from Yobit. I do only withdraw bitcoin.

Wishing you good luck to settle the issue and recover your money.