Of course, it is against the rules to register for many accounts at a casino, especially if you know that the establishment is reliable and has been around for a while. This merely shows that you're unaware of their terms and conditions. Even though you may win games in a row, I believe they will have to check your account and have the authority to freeze it if they discover anything suspicious. It really isn't their fault since the casino is merely trying to protect itself from being taken advantage of by some players. I understand how unpleasant it can be to be in a scenario where you are winning but fate has other ideas, which just makes things more difficult.