mining YEC coins deposits to southxchange.com not receving anymore.
Have you tried to talk to the YEC Coin team about the missing Southxchange deposits?
There is no txid for transfer BTC. Support not answer.
The Bitcoin transfer, was it done by your authorization or not?
is it exit scam
Too hard to conclude at the moment, but why do you use exchanges that have poor support. Try using better exchanges next time.