They sent the wrong fuel cap for my car and said t...

They sent the wrong fuel cap for my car and said that they could not accept my return or refund me as I attempted to see if the fuel cap fit on my car. I explained that it's just screwing it on, what am I supposed to do otherwise?! They see this as I "installed" the part and that voids returns. Weird. Can't be trusted, probably nickle & diming a lot of people this way as no one will argue too much for a $7 part. Easier for me to just not shop there again.