Poor customer service from Mix Telematics

I called Mix Telematics on 16 January. 23 to test my Tracking device for insurance purposes. Both Mrs Kagiso Dishwama and Mr Steven Ramashua from Mix Telematics informed me that the Tracking divice for my vehicle HF40XXGP is faulty and does not pick up my vehicle. Both of them promised to arrange for Mix Telematics customer care to fix my device. I am still waiting for Mix Telematics to contact me. My vehicle is currently not insured due to the faulty tracking device. I furthermore dont understand why Mix Telematics did not pick it up from their side that the Tracking device is faulty..