Agreed on a sales price for a Sierra with their in...

Agreed on a sales price for a Sierra with their internet marketing dept. When I arrived to finalize deal they tell me the truck is at a different location & offer to sell me a "better equipped" model. I insist on the unit I had made the deal on, they told me it would take a week to arrive & I had to put down a deposit; I agreed. 10 days later they give me a b.s. story saying it had been sold already at the other location. Big waste of time.