I wouldn't be too sure of all that Stephen, most likely it never has and never will be tested, because PP, Etc. stick to the rules and restrict bets rather than refuse them and they pay out accordingly on legit winning bets.
What I was saying to you earlier (post number 34) was that they have No legal jurisdiction over charge-backs in the ROI, but their rules seem to imply that not only could they get the charge-back cancelled, they could also bill you fer the cost involved in doing it, that is total bull shite, been there, got the T-shirt !