East Rand Mercedes , poor client engagement and service

I had my Merc towed to the East Rand Mercedes for a breakdown on the 17 April at 7:30am. I 1st called to ask if they will look at the car and let me know what does ESP mean, as this appeared on the alerts and what the cost would be to fix. At 4:30pm on the 17 I called to ask for an update and was told that they will not get a change to look at it but will do this morning the 18 April. After various calls today, being kept on hold for many minutes and being promised that someone will get back to me, I still don’t have a response. I asked to speak to the manager but was told that he is in meetings. It is most frustrating, that when you need assistance they cant help but when they want to sell a car they very efficient. Im a regular client of theirs and it is sad that I have been treated so badly. I’m now 2 days without a car and hope Mercedes will take all my phone call costs and time. Hope someone out there can hear me and help.