El Dorado Mazda

I bought a Mazda CX-5 from El Dorado. I didn't like amount of money they offered for my trade in, so they upped the trade in value 2 grand, and then turned around and added it at the end of the contract, and did not tell me. They didn't give me anything they just moved the numbers around. I didn't discover it until about 5 months after I bought the car and had moved 6 hours south. Not trustworthy.