I ordered a car bra from Concord Lincoln Mercury. I asked him to be sure it'd fit my Cougar because of the new bumper design. He checked and said it'd work, and when I got it, it absolutely did not fit. He tried to charge me a restock fee, so we had to argue and bring him out to show him it didn't fit right.
Other time there was an error, I was ordering parts for the GL from Best Ford. We specifically told them we had the 2.0l engine. The parts came and they were for the 2.5l - didn't fit. They tried to charge the restock fee again, so we had to piss and whine about how it was their mistake.
