Buying used car.

I experienced a painful thing with this dealership, I went there to buy a car thinking that they sell good quality products only to find that they are totally robbing people. I trade in 2 of my vehicles and they ****** me totally. I came out there with a broken old car that was involved in an accident, it is faulty as we speak, and my 1 car was brand new the reason of trading it in was that I wanted another brand,the second one was in a very good condition than the one they gave me. I still need legal advice and I will not rest until Justice be done