Discovery Insure Incompetence and ********* business processes

I have a maintenance plan with Discovery Insure, which covers mechanical and electrical parts. My electronic mirror stopped closing properly, as it should when locking my car. I put in a claim with Discovery to have it fixed. Discovery assessed my hole car, even my tire thread, before deciding to approve the claim for the mirror. They put the cost at R 9 007.13. The claim was then assigned to Lanseria Auto Body, who, after a week still doesn't have the parts to fix the mirror. They wanted to replace the whole mirror, which includes respraying a new mirror etc. After getting fed up with waiting and following up with Lanseria Auto Body, who wants to try find second hand parts to fix the mirror with so they don't have to replace the whole mirror, I made one phone call to Mazda Randburg who confirmed that the only part that needs replacing is called an actuator and it sells for R509 excl vat. Mazda supplies and fit it for a total price of only R2500. This is a staggering amount smaller than R9k! I am very disappointed with the incompetence and ********* business practices of Discovery and their appointed panel beaters. The very same day I claimed against the maintenance plan, my inclusive insurance and maintenance plan policy premium was raised with R300 per month. My premium includes an excess waiver and this isn't even an insurance claim. So why is my premium lifted? This is absolutely appalling and Discovery is clearly not interested in a fair customer centric business model, but rather only in it for money. Disgusting!