Dealership pissed me off! Weird!

IMO there are no rules to this game they play. My trade in is valued at X amount of money and they should not screw someone out of said money. I dont care if your buying a $5000 car or a $100k car. Just because I know the games they play your right I had ammo in my pocket to get the best deal for us. Which I did, and they lost money. I dont believe that is my problem.

We are not set on this car, and yes there are other dealerships I will go to. But I will not recommend this dealership to anyone and I will bad mouth them all over if they choose not to honor there price. I'll wait to hear from possibly the owner, manager or saleman today.