It's a good thing that a casino staff has noticed your concern but not every gambling site could do that. Gambling addiction is hard to resist but I don't think the casino site is accountable for it. A person who has fallen for a gambling addiction will always find ways to gamble so requesting permanent banning won't always be an effective solution.
That's true. You can't rely on others when having this kind of problem. You should try to solve it on your own. Otherwise, you will blame casinos everytime you make this kind of losses. Unfortunately, not all of us can deal with.