I know the feeling, bro. Multi accounting can really mess things up, especially for those casinos that give rewards to the referrer based on how much you gamble. It's true, it can give an unfair advantage and mess with the house edge. But yeah, it does seem a bit two-faced for casinos to enforce this rule just when someone hits a big win. They should at least try to come to a fair agreement instead of just shutting down the account.