I've had a car's price agreed to in writing (which was the full advertised price they had online) and after presenting cash, they refused to honor it. They said if I was paying cash they required me to spend another $3k minimum on a service package. I told the manager, who was forcing this to happen, to fuck off and walked out. Wasted a lot of my time and it was really dishonest. The salesperson later texted me at my personal number to apologize for the manager and said there was a lot of turmoil at the dealership because of those practices.

This was a fairly large Toyota dealership outside of Houston TX