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I saw the problem here since December last year https://bitcointalksearch.org/topic/m.55754633
He gave Txid as proof that he had made a deposit but after checking the txid I didn't see the transaction value there https://imgur.com/2brbTfC
My guess is a problem with the wallet provider used or maybe you sent it to the wrong address.
I think the same, I checked the txid and I wonder why the deposit address is a contract address? As per my experience, my deposit address on duelbits is not a contract address. I suggest this user to show his deposit address first by taking a screenshot from the deposit menu. Looking at the above transaction, the deposit address is 0xd6a062cae6123c158768a5c444ca0896cc60d6b1 which is a contract address. I think he did a mistake while doing copy and paste the address from duelbits or perhaps his device is infected by a copy and paste malware.