Disappointed client

Almost 3 years later I am yet AGAIN writing a complaint about the handling of my claim. I took in my VW Polo for an assessment and to my surprise I was told that generic parts will be used to repair it. I laid a complaint about this and have yet to receive a simple acknowledgement of my complaint.I was contacted this afternoon and informed that the assessment was finalised and that my claim would be finalised soon. At which point I questioned the feedback on my dispute dispute to no avail. I pay for insurance so that I have peace of mind should anything happen to my car, not to be stressed by my insurance company. The use of other parts other than VW parts will reduce the future value of my car. It is not written anywhere in my policy that my vehicle will not be repaired with genuine parts and the fact that generic parts are being used because VW vehicles only have a 3 year warranty makes no sense to me. What does that warranty have to do with repairs to my fender? Last I checked, that warranty was for mechanical parts and not the shell of the vehicle. I would appreciate if this matter could be attended to urgently, failure which I will engage the ombudsman and consumer protector.