Aftersales non existent

The experience I received when purchasing a new vehicle at Auto city Alberton was good, willing to help all good. Until I drove the car out of the dealership..... On the highway from the dealership my wheel rim came off, was never properly attached when they did my tyre, almost a month later, nothing. 2 days since I received the car, warning lights came on, dealership came to fetch my car returned the car 2 days after. same problem. they just did a reset and returned the car to me. waiting for more than a week for someone from after sales to phone my back.