Substandard service at McCarthy Kunene service center

The service center at Mccarthy Kunene witbank has been the worst service center in the last few years and getting worse. I sent a car because of the fault showing on the dash board the car was driving without thorough check of the car they gave a quote that in my view was “ wrong” The next day when starting the car it was no longer starting and was showing even more faults decided to take the car to Manly Mercedes the diagnosis was completely different and the quote was three times cheaper than. Car was fixed in three days and driving perfect now. This has been a build up of substandard service by this service center. My last service done there made me to really doubt if there we still technicians in that center