there are 17 corrupted transactions on the blockchain, and nicehash confirms 2 out of 3.
Hm... if I understood this correctly, you sent a 0.0076 BTC deposit to your Nicehash account and they didn't confirm it yet? In that case, I guess you meant 17 "confirmations" and not "corrupted".
You'll have to wait for them to reply to your support ticket or for their system to just credit your account. There isn't anything we can do.