Another Discovery Insurance Nightmare

I had an accident in December 2019 and Discovery Insure booked my vehicle in for repairs at a Panelbeater in Kyalami on the 6th of January. I drive a Lexus and when I got to the Panelbeaters I noticed that there was no signage indicating that they were a Lexus approved facility. Upon enquiry, I told a very unlikely and unconvincing story so I demanded to see the manager, who, after being urged to see me reluctantly emerged 10 minutes later and confirmed that indeed they were not Lexus accredited. She told me to sort the concern out with Discovery. When I called Discovery I was told that they couldn’t rectify the situation on that day. I left the facility with my vehicle at around 11:00 and sent an email to the claim handler at Discovery around 13:00 on the 6th. Til now, I have not received so much as an acknowledgement of my email. As it is, I am not sure whether Discovery is addressing my issue because since Monday the claim handler’s number isn’t being answered and neither are my emails. I raised the issue of using a Lexus accredited Panelbeater to Discovery and to the Assessors prior to my claim being approved. My concern is what would have happened had I not been aware that I needed to confirm accreditation. There are a lot of Lexus accredited Panelbeaters in Gauteng, why would Discovery take my car to one that is not approved to repair a Lexus and risk my warranty? It is starting to look like every thing with Discovery must be a struggle before they do what we pay premiums for.