Clay Cooley Isuzu - Dallas DO NOT TRUST THESES PEOPLE MY GF AND I GOT BURNED REALLY BAD dallas , Texas

hello my girlfriend and i bought 2 cars from clay cooley dealership 9 months ago. one of the car was 2006 ford taurus and a 2003 pontiac grand am we were told for the taurus it would be 500 down and for the grand am it would be 800 down and our car payments would be the same we said okay they came back to us in 30 minutes and said the taurus is going to be 681 and the grand am would be 581 we said no we arent doing this then they told us to wait . we waited entil 730pm in the meantime we were there from 11am entil 730pm come on get real anyway they came back and said ok the taurus will be 381 and the grand am will be 399 then my gf and i decided to talk about this and see if it would fit out budget so we told them it would then they told me since i work for a landscaping company and i dont have check stubs cause im getting payed cash they told us to follow them over to a computer and they are going to put a false name on it with a address and phone number and prove to the finance people  how much im making my girlfriend and i said no this is wrong thats a crime they said shut up do you want the cars or not at that time we said we want our money back and they said its to late the deal has been processed and the money is on the way to the bank so we got stuck with the cars. 

then they come back to us with a piece of paper and have us sign it and tell us that in 8 months from when we got the cars we can come in and trade them in for brand new cars so my girlfriend and i were like great New Cars sweet huh wrong ..... we are in our 9 month and the grand am broke down stopped running so my girlfriend called and said what about the the 8 months they said please hold we will transfer you back to finance dept so 30 mins went by and Larry Hackett picked up the phone and said what is wrong with the car my girlfriend said it wont start or run he said bring it in she said it Dont Run then she went onto to say what about our 8 month deal and he came back to a response saying due to the tough economic times we no longer due that anymore my girlfriend started to coming unglued she is like what you guys signed off on we would get new cars after 8 months and now your backing out so she said you know what just come get the car and screw yourselves so they did. we went to take the keys in and they laughed at us and said you will never get a car again in the meantime we still had the taurus we left there car lot and found a brand new car 500 down 1400 miles on it and got approved now we are going to take the taurus back because we are getting screwed we found out that is not being reported on my credit ........

what are my options here we got burned really bad and dont know what to do to theses people