Not great service from Hyundai East Rand

Hi, had my H100 in 3 times to fix speedometer. First: went for service and did not fix it. Second: booked it in after service again to fix where they informed me it was Cartracks fault that it doesn't work. Cartrack came out and gave a report to establish that the problem is not on their side. Third: Booked it in once again, said it was only a fuse but again it still didn't work.

called with no relevant person to talk to, left my number and still no phone call. Wrote emails with the dealer principle in copy and still no feedback.

NOT GREAT SERVICE AT ALL