Worst service and ********* dealings

I was sold a Kia Rio by sales person victor, in May 2017, in June 2017,they requested the car to programme the spare key, on their way back to me I was advised that the car switched off they don't know what the issue is. They advise that the engine was faulty with under 10000 km on the clock a new engine was put it, after wesbanks evaluations and the dealerships they advised the car was in excellent working condition and the car had no issue, if there were any future issues it would be covered under Kia warranty, on the 18th of September 2017 I booked the car into the Glen Kia, as the car was feeling sluggish, they advised that the car wasn't going into 1st gear and I need to book it in to do a full evaluation. I booked the car in on Monday the 02 October 2017 and was advised by Kia that the car was involved in a front collision and that the gearbox was damaged, the gearbox was also glued together and all the small broken pieces were still in the gearbox, it was suppose to be fixed by kia and it wasn't so it was not covered under warranty, the vehicle was also not in a drivable condition and I was put at risk, I am livid at this dealership and I have requested to cancel my contract with them. They still haven't even given me a courtesy call. This is *********ly and leaves a bitter taste about the dealership and Kia SA