Below standard customer service from Midrand Nissan

My 10 month old Magnite with less than 7000km on the clock broke down in Midrand, taken to cmh Nissan Midrand on Saturday, June 18. Monday, June 20 I received a call to confirm the EARTH CABLE Broke and the new earth cable would be replaced, car would be ready on Monday, June 27. According to cmh Midrand Nissan I do not qualify for a borrow vehicle as this is provided ONLY for customers that waits for longer than 14 days for a part for their vehicles. The next day I receive a call that my vehicle can be fetched and is safe to drive. The new part not replaced yet. I telephoned on Monday, June 27, to hear the part has not been received yet, it is on back order. I enquired about a rental because now I sit without a vehicle for a week now. And still I am waiting for the telephone call. I will see if the aircon was repaired as I reported that the aircon has periods of not cooling down as well as the dash lid that was scew.