Casinos are always protected by their terms and conditions. It's a problem for a casino which hasn't made it's name yet but when a casino earn a reputation we respect their decision because of their long term loyalty to their clients.
I do not agree with some terms casinos have. I feel like some things are a blanket term that gives a casino outs to take a large win away from a player.
Multiple accounts is bullshit. If someone has created multiple accounts cheating a bonus or promotion, then ban said user and their alts. Don't allow a user to keep depositing or something like that, then they get a win and get fucked out of it. If they have multi accounts and you allowed them to deposit, then on that deposit they won without cheating, pay that man his money period.
When sites are getting their games from a 3rd party like the slots on most casinos, sites have to wait for a response from the provider if there is an issue. 3 weeks plus seems a bit nutty to me. I feel like the 2 parties should be able to get on a video chat and solve a problem in a much faster time frame(like a couple fucking days) vs emailing back and forth and someone answering whenever they please.