I don't like to be the ladder that falls on the guy who fell off it, but... what on earth were you doing depositing $10k worth of crypto onto an exchange? And one like Yobit even..?

I actually have used the platform before, back when I actually played around with tokens and stuff. You really must be more careful with your funds. If you have a little more, deposit enough so you can chat in the chatbox (think it used to be 0.001 BTC) and get hold of one of the mods there. Offer to pay some kind of fee for having to deal with the trouble maybe (since it will be a hassle for their obviously already overworked support). If you get it back, don't look back. Pay your fees and bills. Don't play with money you can't afford to lose.