. Betsson Casino - Casino Dear AGCCS,I am regular player with Bet and William Hill Casino Slot machines. The. Casino - Complaints Ignored about Payment. Hello, I won a large amount playing on the casino of Betsson a while back. I will now. withdrawal request I tried to login and got an error. The player from Brazil has transferred a significant amount of money to the Betsson online casino through Nexta Payment Services LTD.