That's the reason why we need to know Their terms and conditions before we deposit and also its an obvious that creating multiple account in one IP address or in one device such as phone, laptops etc. the casino will detect that and there's a chance that your account was restricted because of that and some casino include that in Their terms and conditions.  They will restrict that account found that they are logging in the same IP address cause they think that is part of cheating in their casino. And we don't have right to complain about that. Anyways Op can ask to refund the deposited amount but there's a chance that the casino will not grant that.