What's the reason for asking to close your account? Isn't it possible for you to just withdraw all your funds if you don't want to gamble anymore? And you blame to them you lose your money because you probably got tempted to bet?
It's pretty clear that he is a gambling addict which is why his anger seems justified in this case.
That's why I just want to clarify what really was the problem as this is the ANN thread of a casino, we don't want to see some newbies trying to ruin it just because they were addicted in gambling and the site was delayed in closing them. I was also addicted before but it has not come this worst that I have to blame the casino for my mistakes.