I just had the same experience. Before I explain it I have to admit I didn't read about the minimum deposit requirement. My fault.
I transferred about 300 dogecoin from my wallet to get to emptied. Saw the minimum deposit so I decided to transfer 10000 more from another account.
Now it's all gone.
I don't think I'll do any more business with mcxnow.
Can't figure out how to approach them.