Accusation without a proof is absolutely meaningless, where are you going to start from? That should be the question because there is a high possiblity that such accusation can only be made when the gambling site it's not in there favor or something else just to make difficult for them forgetting that accusation without evidence would never go anywhere.
Obviously they might have do something wrong in gambling site or not following the rules of the casino and end losing their funds because it is very common with the new beginners.
Some times I think some of the baseless accusations you see from newbies are as a result of frustration after suffering so much losses in the casinos without winning when you see them coming out to say a lot of things without proof just know that it's coming from pains and sadness since they couldn't win after trying so many times they want to paint the particular casino bad so that they will lose some of their customers who will be believing what they saw even without proof. The best thing is for the representative of the casinos to always try to clear their names when they see such accusations so that it doesn't affect their brand.
That is just the truth because it takes time for the new beginners to accept losses in gambling because most of them started with the mindset of doubling their money overnight, without remembering that luck plays a significant role in determining the final outcome of the game. Honestly, this accusation are not a new thing anymore because there is no how a responsible gambler that knows what gambling is about would bring accusation without proof that is not possible at all because nobody is a kid in this game, we all know the truth and it is only the new beginners that don't know much about the game wouldn't do needful things.