Oh I've got it alright. In fact (since he didn't have a card), I made him write it on my paper for me. He looked TERRIFIED when I did that, as he realized, I think, how inappropriate he had been. From that point forward he tried to at least pretend he was interested (i.e. he said it wasn't that he didn't believe I didn't pay for the upgrade, that he didn't ask for my credit card earlier to make me pay since he did believe me, etc.).