Okay, then you can file a complaint and I would probably do that if I were you.
As far as casinos are concerned, each has its own management, unless they are related casinos.
Why they don't answer you I can't say, because they should comment on that, we don't work in casinos. When you made a crypto withdrawal, it should be the fastest, that's true, and again we come to the fact that they should tell us why it is happening.
Speaking of the fact that some casinos are responding to players on the forum, some have asked us if they can have an account here for these very reasons. But not every casino has this, so that's why you don't see any answers on the forum from some of them because they don't engage.
As for the safety index, everything is explained here:

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