I think there are perfect casinos, if we mean their intentions, but of course mistakes can happen anywhere. That's why the way Support of a gambling site works is of major importance. The reputation of the otherwise good site can be ruined merely by poor performance of their support.
I agree, the support has a major role to build a good reputation for the casino because even they're lacking of something but the support is fast to solve every gambler's concern then its a plus point to gain the trust of the customers. For me there's no perfect casino, they have their own flaws but every problem has a solution and this depends on each casino on how they will handle it.