Old Mutual Openly doing Insurance ***** without blinking an eye!!

Someone drove into my vehicle and damaged it. I've then done an assessment on the vehicle at 3 different panelbeaters and then got an Audatex report which is a forced down rate to get the vehicle fixed from your insurance using pirate parts etc. I decided i'm claiming directly from the 3rd party insurance from (Old Mutual Insurance) not to affect your claims and bonuses... What they do is super inflate their clients Audatex report BY 100% and change your audatex report to -200-300% of the real value to limit the amount that they need to pay out to you as 3rd party or to any insurance company. They then try to validate it by telling you its been done by 3 independant assessors. Strange how my audatex report done by 3 different assessors was 120% more than what they allowed? They super inflate their clients Audatex report which was basically just spraypainting/polishing the bumper (Ford Kuga) (R11500) (centre of back bumper) vs (Audi A4) Left Back, Thorn bumper with broken brackets, broken light and damaged sensor was R8000. I've highlighted this to them through the many weeks of trying to resolving this and they just simply ignored it.