Hyundai South Africa poor customer service.

My wife’s 2016 Tucson has been acting up. It switches off at any time while driving. I took it in as a warranty repair. Hyundai Weltevreden had the vehicle one day and then returned it. They claimed that it was some main power fuse. After driving for a day or two, the same problem occurred. I took it back and they had it a few days. They cannot find the fault. We then took the vehicle…work commitments. We then had a hail damage claim which rendered the vehicle out of action for 4 weeks. After the hail damage repairs, we are received the vehicle and proceeded to contact Hyundai SA and Hyundai Weltevreden. Hyundai weltevreden’s service manger promised to call me back when the line was better (after load shedding). I’m still waiting…2 weeks later. The problem is getting worse, but they show no sign of helping…they now want us to leave the vehicle so they can drive it around until it can be fixed(his words exactly) What do we do if this takes a month? How do we get around? This is a dangerous situation. I have no faith in this brand anymore. Both the product and their approach to customer service is poor. I will definitely not be recommending this brand to anyone.