Ok, now i have enough !! What the hell is going on??!!

I sent some XEMs to this exchange 23 days ago, and to date nothing has been credited. I write to their support center DAILY, but the situation does not improve; 90% of the time my tokens are deleted or ignored.
As far as withdrawals are concerned, things are not going better. There's no way to withdraw coins from there, because their confirmation email ALWAYS arrive too late, and their security system blocks the withdrawal process. I tried a dozen times and then I gave up ...