Mercedes-Benz Bedfordview - Worse Service from Lappies Labuschagne - Reporting to Derk Vanniekerk

I selected Mercedes-Benz Bedfordview to fix my car which is on warranty with Discovery Insure/M-sure because the car was bought from this dealership. I have received the worse service ever. Since my car was delivered to them by a Towing truck on the 19th of February until today I haven't received any feed back progress. When I spoke to M-sure they are also struggling to communicate with this service manager Lappies labuschagne. Though I tried to speak to his Manager Derk Vanniekerk sounded clueless of what is happening in his department. I don't even trust this Lappies guy even quoted my car accordingly. I can be happy if my car can moved from this service manager and handed over to someone who will prioritise this job. I have phoned multiple times, left messages and he doesn't care to call back. When I spoke to Msure they told me that thay are also struggling to get hold of this guy. He does respond even to their emails. This is bad for such a big company.