They don't want you to use their platform, what's the problem, mate?
Why do you keep signing up onto it with alternate accounts if you are not wanted there? Is it the only gambling platform available?
I think they have a right to terminate their service with you as per the terms of service and you should respect their decision too.
However, at least the casino management must provide reasons or clarity for the problem. Every casino site must be able to properly solve the problems experienced by its users.
However, this can affect the reputation of a casino, so that there is no gambler who is disappointed with casino decisions without definite clarity so that gamblers can act as they please because it can damage good reputation and make other gamblers distrust the casino site.
I think also giving a reason or clarity is not a difficult thing for casino managers.
Before even naming Bustabit reputation, one of the most solid on the whole crypto gambling sector, you should at least read properly last page of this thread where Devans (aka casino management) wrote for yet another time the widely explained to that user the reasons why he cannot use bustabit anymore and also added he is not going to repeat them for a couple of solid reasons in the bolded part below , therefore acting in a very professional way