Never trade in car

I traded my old I10 in for the new Grand i10 and 2 months later I am still paying for my old car as well as my new.. not only did I receive horrible service from the start, including lies, empty promises and then false accusations, I have had to battle to sort out my old car account on my own as the dealer failed to to settle my old car and close my account with MFC and I am now still paying for the car.. car was bought 04 April and still no number plates.. I have been warned by many not to deal with this dealer and now I know why..