Is this the entire email exchange between you and Duelbits or is there more?
https://ibb.co/pvGhBqGy
As others have said, casinos don't have to participate in scam accusation threads and discuss things publicly with the community. It's a sign of good will if they do, though. Some have done it in the past and embarrassed themselves, so they decided to stop afterwards because there are several people in this sub that know what they are doing.
The thing is, it's impossible for anyone here to know if you really broke their terms or not. Even if they state publicly which rules you broke, you can always say that you didn't. If they show how you are allegedly connected to other bonus abusers, you can again claim that it's not true and that you didn't do anything wrong.
Having a mediator like CG take a look at your case remains the best way forward.