This  is very wrong and I can only imagine how much loss you must have incurred by now and there is no way they will just suddenly cut off your commissions without any prior  notice and I think you should also try checking your emails, spam box or even important  folder in your inbox so check for any prior notice and if you've done all this and no one from their team has tried responding to you despite all your attempt to reach them, then it will be better if you have any proves of your attempt to reach but to no avail,  then I think you should try reporting to any gambling authorities closer to you  thats if gambling is legalized in your country, as they will nest advice you on what to do with the help of your lawyer.