I guess it is not a crypto related casino. So the only resolution I see here to approach your local police station and register a case under cheting and breach of trust.
I don't think it will help you if you open a thread under scam acquisition here.
I think mostly in our country there is no proper Law regarding it I still it need to be implemented well no doubt some site can pay you but when you come to know that how they pay you it's illegal they use the shell Bank account of less educated person but make Transaction using that account it's for illegal purpose as well t's gambling site and its really really bad I hate gambling site but I think that's how the world will run everyone mostly think about only themself don't you think that