I dont understand why you think this is unfair?
A fraudulant player comes to bet365 and spends £100 and loses it all… lets say you earn 30% commission you then get £30.
That player has stolen a credit card therefore we close his account and send back the £100 to the credit card company.. We remove the player from your affiliate account which in turn then removes the £30 commission from your account. You have not lost any funds we have not lost any funds..
Alternatively if a player bets £100 and wins and you then go to negative balance of Minus-£30 when this player is suspended we remove this negative figure from your account.
I hope this was a better explanation
kind regards
Kelly