Sorry OP but all I can see in you is desperate and frustrated gambler, gambling, like its called is gambling, there is never a guarantee of making profit on your money, this is why it is commonly advised to gamble only what or an amount you are comfortable lose, don't go betting too much and hope to win, because like I said before, there is no guarantee of winning in gambling.
You cant attack a casino and tag them as scammers simply because they did not announce you as the winner, it simply shows/means you went over board in your gambling by betting much more than you can afford to lose in hopes of winning.
Not really, I think @OP has a point here, if you run a contest, the host should show statistics so that this kind of conflict will be avoided. @OP is asking for statistics and data transparency because he has doubt about the result which is strengthen by the first announcement of the host where they announced a winner that is not qualified to be included on the event.
I think to solve this issue, the host should provide the table of the participants and their wagered amount, that way all the confusion and doubt will be cleared and this case be close or resolved.