This section is for reputation disputes only. If it outlines any of the concerns listed in the rules page in this section, then it will be looked at. From what I see in regards to the reputation, there is direct interaction involved, thus reputation stands.
As for the giveaway rule breaking, I cannot confirm nor deny if he gave out the reward. OP didn't even get a single shred of thanks or reputation for that post, so he gained nothing from it. Safe to say he's telling the truth. Proof would've been good to provide, but it's not a big deal. Also, if you have a problem with something, let the appropriate staff handle it. They're there for a reason.