Bad Service Delivery Discover insure

The worst Short term insurer in SA, on the 20th January 2022 I had Pot Hole Damage on my Mercedes-Benz ML 350, The complain was tyre and rims and a clapping noise on steering. The vehicle was then taken to their preferred panel beater, Olympic Auto Body, the rims were fixed, tyre replaced, front shocks and shock mountings replaced and control arms with rubbers replaced, after this the clapping sound is still there. Discovery the decide to appoint a mechanical engineer to investigate, he then check the front suspension and due to signs of wear and tear on rubbers and ball joints he then referred the evidence to a forensic expert, they then decide to decline the replacement of steering rack, I except it and receive my car back middle August 2022, I the immediately took it to a Mercedes-Benz technician Welkom he then detected within the first 30 minutes that clapping sound is not from the suspension or steering rack but from a bush on the steering column where it came trough the fire wall, it was forced out of position due to impact, he then clean and refurbish it and re-install it. Discovery decline payment of him My point it is that Discovery and all there so called specialist couldn't detect the real fault since January till today, they only find reasons not to pay, the faulty part not seen by any person at Discovery, I did submit a video of the faulty part. No assessor of Discovery ever seen the vehicle and the appointed so called specialist only came to seek for reasons not to pay and never look for the real mistake. when asked questions via email, I did receive the read notice but were totally ignored , never been answered, when you phone the call center i were on the line during this period for more than two hours, if you push them into a corner I were disconnected, no interest to phone me back With all these evidence the representative from the CEOs office still said that they cant overturn the decision