Poor service at Mercedes Benz Rosebank

I had a breakdown on Monday 3 Feb at 12am in Rosebank. Waited for a technician who failed to sort out the problem. He then requested a tow truck to tow me to a dealer. I asked that the car be towed to Sandton , my service center, but he categorically refused and instead arranged it to be towed to Rosebank. The whole process took 3 hours. That was Monday. I only heard from the designated service consultant from Merc Rosebank on Tuesday 3pm (24 hrs later) asking me for an ID and that he would order the part. No indication of how long the vehicle would stay at the workshop. Today is Friday, I have called the dealer twice and left my number, but still no callback from the service consultant. This inconvenience is costing me on average, R1500 per day to move around without a car. I am utterly disappointed