Yeah a few years back, a friend of mine file a complaint that his account suddenly blocked without any reason and the issue has been resolved. However the issue was related with the sports bonus for a new user not with sports betting/odds/void/etc.

He deposit and the account suddenly blocked after he claim the bonus, it happened because he ever claim the same bonus with other account/multi acc.
CG contact the casino and they inform CG with the proof, so the bad guy here is my friend lol.