does this actually work? one site only handles casino related complaints not sports betting and the second I dont think covers cases involving winna.. or I am wrong?
This works if the casino involved care about their reputation while the evidence they provided is weak.
The arbitrator that suggested above is the only service you can get to help in case like this or direct your complaint to the license provider which is a long shot.
Nevertheless, there’s no known cases AFAIK that solve properly involving arbitrage betting.