Thanks. See some evidents followed.

In the last page with the final price and my signature,
the sale's man wrote a wrong old car, which is not my car,
wrong year and wrong model.
My friend and her mother came to Dealer, and fond there is
the color I asked, but he told me there is no.
Moreover, the first price he gave them is $400-500 lower than the price I signed. Do you think those evidents are useful?