Poor service

I have a hollard motor extender policy administered by mototech. My car broke down and I took it to Bosch for for diagnosis. A compression test revealed that the damage was due to overheating that happened before and I fixed without claiming . Now mototech seems to be wanting to reject my claim but no where on my policy does it state that damage caused by overheating is not covered. I spoke to a white gentleman by the name of Kyle who refused me to speak to a manager. I was promised tha John Odendaal would call me and I'm still waiting. Hollard has outsourced this company that does not respect blacK customers. Kyle was very condescending when he spoke to me. Apparently Mr Odendaal is the MD, claims manager, complaints manager and senior manager at the same time. Does Hollard know exactly what is happening at mototech?? I have been calling mototech for feedback the entire week . Not even once did they see a need to keep me updated. I wonder what is mototech's BEE level. They have no regard for their black customers.