United Nissan united nissan told me to give my car back to the bank!! Las Vegas Nevada

I went to United Nissan June 2008 to trade in my 2004 Santa Fe for a used Nissan Murano. Instantly I was informed that there were not any used Murano's and i would have to buy a new one. I figured it they could get me financed for a new one why not. Shortly after walking the lot I found the car I wanted, then came the hard part.The sales man and I sat down and started to go over numbers. He tells me that my car is not worth much but never told me how much. he said that I was so upside down that they don't even want my Santa Fe. I would have to come up with a extreme amount of money and my credit was horrible. He said that the only way they I could get this new car was to "give my car back to the bank." I told him I have paid every single car payment on time for 2 yrs why would I give it back. he says " your credit is already bad it cant get any worse". I was so shocked that a sales man who needs my business more than I need his insulted me like that. I gladly walked out off that place and have no intentions of ever returning. Ill drive my upside down Santa Fe until the wheels fall off.

Confused in las vegas
las vegas, Nevada
U.S.A.