HORRIBLE SERVICE FROM MOMENTUM

I had an accident (Claim number: 076/984020) on my 3 months old V Class (number plate KR59YZGP)late last year and it was taken to ReNewIt-Sandton. When the vehicle eventually got back it the intelligent Lighting System was not working and there was a big sign stating that as well. I reported this issue to Momentum and ReNew-IT after taking the vehicle to Mercedes Benz who discovered that a generic windscreen was put in installed instead of an original. The wires were all hanging and not connected. I got stories from RenewIT that they were not in-charge of charging the windscreen. Eventually the Windscreen was eventually installed. But the problem persisted. I took the vehicle to Mercedes about 3 times and they eventually discovered that the left light was damaged and was support to be changed after the accident but was never changed. I reported this issue to Momentum and Renew IT. I went ahead and paid Mercedes R29 000 to get a new light as I couldnt wait for Renew It and Momentum. Now when I am following up for my refund Im told that they wont pay me back my R29 000 because its 6 months later. But i reported this issue with them when it first started and we didnt know that they never changed the lights until Mercedes Benz discovered the fault on their 3rd try after stripping the car of everything. I want my money because if your assessor had done their work this part would have been bought and fixed. I dont understand why Momentum is denying me my refund. I dont want to deal with thier arrogant and *********** suppliers.