INCOMPETENCE OF NMI-DSM OLD FORT ROAD, DURBAN

I have taken my car 3 times in 2017 to this dealership who are unable to detect/ diagnose the fault, each time I have taken the car in, the technicians advise the service advisor to tell the client that they are unable to fix the problem, however the next time the ENGINE LIGHT comes on, call the call centre who will be able to assist you. The service advisor JUDITH is not very helpful and for crying out loud do not even go near the service Manager (ISMAIL), all seem to be totally *********** and lack customer service s****s. I tried logging the complaint with MBSA directly only to be told in this day and age that (WARICK) couldn't do so as he needed a VIN number. (Who walks around with a vin number nowadays). Can someone SENIOR please call me as this dealership is losing the plot and are unable to rectify the fault on my car.