Same thing happened to me. I hought a demo 2020 model S LR+ that was supposed to have 350 miles on it with a $2200 discount. When I picked it up it had 550 miles on it but the discount was increased to $3000. The car was in perfect condition so I was happy to get the addtional money off. I only gave a $100 deposit when ordering and didn't pay in full until after I got a chance to inspect, but not, drive it. This was last June and the car is still perfect.