I sold him a coil pack "brick" from the M275 engines (MB V12 Bi-Turbo Engine)
He had a misfire issue that he thought was a coil pack problem. When he installed the one I sent him, he still had the same misfires but stated that the misfires were more frequent with the coil I pack I sold him vs his old coil pack. He decided to just break down and buy one at the dealership and the brand new one had "less frequent" misfires, but still misfired none-the-less... So he decided my coil pack was faulty.
I asked him how he can condemn the coil pack as the problem when he still has misfires with a brand new one and he wanted no part of that question.
I wanted to make him happy so I told him to come up with a fair solution but to also keep in mind that I still stated the product was "as is" and that i'm just going by his word that he himself, installed it properly, and also that he never accidentally dropped it or anything of that nature.
He still wouldn't do that either. It was all or nothing with this kid. So he proceeded to make the claim. PayPal initially decided in my favor but now it seems they over turned their decision.
BTW - He is claiming "internal" damage.