This bookie is a huge scam.
I opened an account one month ago. In total I made two deposits via USDT within month. I never received any withdrawal from them. When I requested a 1st withdrawal they closed down my account due to violation of their T&C. They confiscated my winnings (approx. 1.5k USDT) as well as all of my deposits (approx. 700 USDT). They don´t give any further reasoning for account closure, just violation of T&C. Hopefully nobody will ever deposit at this bookie again as they won´t pay you.
So sorry about your experience with the ole777 casino. There have been complaints coming in about the ole777 casino and they have not been able to resolve them in any ways. Majority of the complaints are still pending and begging to be attended to. Lest I forget the it's been a while since this representative was active here but just like it was advised to the other complainant, you should create a scam accusation thread here
https://bitcointalk.org/index.php?board=83.0 with proper evidence backing your claims so that members could aid you by calling on he attention of the ole777 team if they are still ready to remain relevant here.