Bad Service HYUNDAI STELLENBOSCH

Bad Service with Hyundai Stellenbosch, I’ve been driving a car with expired permit. My disc and number plate haven’t arrived no update on their end. I have been calling sending WhatsApps no response. I’m a first time driver and first time owning a car I’m so clueless and frustrated. Thinking of taking ****** car back because it is useless at this point