Naperville Dodge / True Car review: Car sales

On august 5 2023 I contacted true car through their web site about a car they were advertising and went through there buy it now process and was given a purchase code and an appointment to purchase the car at the dealership. Drove 3 hours through traffic road construction and weather to get it only to be told by the dealership that there was no way they would honor the deal. They wanted me to pay an additional 10000 dollars for a market price adjustment. Contacted truecar they filed a inquiry and said that was the dealers position. My problem is the car is still listed as it was with no mention of the adjustment. The dealer was naperville dodge.