I have made some findings about this before if I remember correctly. There are people that have sued gambling sites before but the result has always been the gambling site winning the lawsuit. So just know that if anyone sue any reputed gambling site, the gambling site may win the case.
And so likely, I haven't heard that there's a legal jurisdiction in existence to back gamblers up against casinos oppressions.
Even in the highily regulated regions, I've always heard about the casinos cheating players but the players have always stand defenseless. Very weird and not even the government that cares about you and yet the casinos reputations are under their watch.
So it's just better you save your resources of facing a fight with the casino otherwise, your efforts will be in vein.