After all, the information he provided shows that it is a mistake in the deposit.
Why you can judge he was doing mistake on the deposit? I can see the address already received 0.06 BTC while he said only 0.02 BTC arrived in his account... do you think blockchain got manipulated? AFAIK there's no mistake from his side, the problem is from 1xbit.
Yep the representative hasn't disappeared but it's useless since the problem will be ended like many unresolved cases before.