Misrepresentation

I bought a new Renault kwid climber that was delivered to me. After a few days I let the salespersons know the car has no power. I said i want to return it or trade it in for a stronger engine car. Originally the saleslady said i should buy a car out of the box. I wanted a mini cooper second hand or suzuki. They dont respond to my enquiries to return the car and cancel the bank loan. Mini distributor said I have a shortfall of R60000 if I trade this kwid in. It has 130km on its clock. Im so disappointed and I feel ****med.