LOL.
I thought about that when I got new tires on the truck. I could just wait in the truck and pull in the next open bay, get out, mic drop.
It was the, "We don't have any appointment slots for a week, but if you come at 5PM, we'll get you in," play. This was AFTER I ordered tires and waited for them to get delivered to the store.
They also tried to jack me full price on everything after I had already negotiated the price when I ordered. Basically tried to screw me out of $500.