Car defaults

I bought a pre- owned car at Hyundai on the 24th of October. the car has too many faults that were not disclosed to me . I started making my complains on the 6th of November 13 days after getting the car, which where never attended to. The car was taken by Hyundai on the 4th of December to date the car is still not back and they are not saying anything. they keep on telling me that they will get back to me when the car is available. I live in Rustenburg, I left the car in Gauteng because of the trips I take to visit Hyundai time and again. I was not even provided with a courtesy car. Not only are they wasting my time, but I am paying for a car that I don't use and that is not with me. I told them to keep the car, and refund the bank their money, still they have not said anything. I am going to take legal action against the company