This one blew my mind. I was working for a small-box electronics store in the mall. A woman came in and wanted a portable DVD player so her kids could watch movies on an upcoming road trip. I showed her what we had in stock. She was unimpressed with the smaller screens but wasn't willing to pay for a bigger model. Plus she wanted to get two of them (one for each child). As luck would have it, we had just gotten in a dual screen DVD player with large displays that was perfect for her AND it was on sale. I brought it out and she loved it. Of course she didn't have the money to buy it right then but said she would come by the next morning to purchase it on her way out of town. I told her that would be fine. I said something like, "Its the only one we've got but I'll hold it for you."
The next morning she comes into the store red-faced and fuming. She storms up to me, waiving the store's current sales insert from the paper, saying, "YOU'RE A F___ING LIER! YOU'RE THE REASON NOONE LIKES SALESMEN." so on and so forth. I'm trying to calm her down so I can understand what it is that I lied to her about but she'll have none of it. She cuts me off when I try to speak. My manager walks up and she begins anew. Finally it comes out, "LOOK, LOOK, RIGHT HERE, IN THIS FLIER THAT YOU PUT IN NEWSPAPERS AROUND THE COUNTRY, IT SAYS THAT YOU CARRY THAT DVD PLAYER! THIS A__HOLE TOLD ME THAT YOU'VE ONLY GOT ONE OF THEM! WELL, IF YOUR COMPANY ONLY HAS ONE OF THEM THEN WHY WOULD THEY PRINT THIS?!?"
We stood there for a second not knowing what to say and trying not to laugh at the absurdity of it. Calmly, I tried to apologize to her and explain that yes, the company has thousands of these DVD players nationwide, however at this location we only have one in stock, currently. Somehow she still didn't get it - or she refused to. After confirming that we worked on commission she decided to buy the DVD player from my manager who then later transfered the sale to me.
She had to be up to something. Trying to get a discount, maybe? I don't know. I still haven't been able to figure out how someone could think that and get that upset about it.