I used my brother-in-laws credit card accidently (I carried it in my pocket for the purpose of a different charge) for a AA purchase, to top of an account that was missing a few 1000 miles.
I realized right away, and I called up AA and explained them the situation, and asked them to refund that charge, and reprocess it on my card. and they told me that this has nothing to do with them, because points.com processes this charge. So I called up points.com, which they told me that they cannot do anything, they are just the processors, this request must come from AA.
I told them: "I'm not fighting for my benefit, just for your benefit, because he will dispute this charge, and you'll lose the money". He told me, that this looks to be the only option.
My BIL ended up disputing this charge, and the miles are still on the account (actually no more, because it was redeemed and flown already).
I believe he'll win the dispute, because on the charge there was my name and info. What should I expect? a call from AA to cover the miles? or maybe nothing....