was sold a demo car adn charged price of a new 1

Bought the car in 2013 was charged for the price of a new car while it was a demo, there were many things wrong with the car, had to use my petrol to visit technicians to fix it. was told by Renault SA to drive the car as I signed a contract. @15 000KM went for service at Polokwane BB Auto, 2 weeks after I went and complained of a disturbing noise, was returned with the respond it might be sand, nothing is wrong. @ 19 000KM was returned with the respond its water from car wash. @28 000KM was returned but refused and took a drive test with the technician who claimed he assed the vehicle, the noise was heard by both, minutes later was told drum, shoes, cylinder and brake fluid will be replaced and it will cost me R5988.56 to be fixed. It was 16:55 was left stranded with no car to go home or pick my son from day care. was only told brake are loose cannot drive the car. I will advice customer not to buy Renault cars at all, warranty is not clear and they **** their customers. they did not call to ask how the service went, and how I got home as long I'm paying my installment.<br> I have photos that were send to Renault SA and the dealership as the car was faulty was told to go to hell