On the surface it seems highly unlikely Sportsbet would scam or selective scam a user for just 0.020942 BTC after sending the original deposit of 0.031 BTC
@Rigor1899 - what exactly was/were the reasons your account was frozen? What were the reasons given to you that you could have 0.031 BTC returned to you but you could not have 0.020942 BTC that you claim you are owed?
So far, no comments or any evidences. Well, I will send link on this for other forums, I think more than one person has encountered such a problem.