AMG kit bumper, but auto & general insurance only approved for alternative bumper. which is a smaller size. and poor workmanship.

14 Dec 2021, I was involved in a accident and my car was taken to Renew-it Rivonia for repairs. Unfortunately, my car is still with Renew-it Rivonia four months later! I am disappointed because: 1. The new bumper is a few centimetres smaller and does not align with my vehicle - Mercedes Benz AMG. Americo, the manager at Renew-it, informs me that Auto & General approved an alternative bumper instead of an AMG kit. How is that possible when the insured vehicle is an AMG model? 2. Further to that, two weeks ago I went to collect the car, pay for the access only to discover the seat headrest was ripped open and the paint work at the back was also not up to standard. I was assured that the matter will be resolved and my car will be delivered. I went there yesterday (13 April) the car was still in the same condition, no work was done. 3. Yesterday we discovered that there is an issue with the boot alignment. Americo, the manager, advised me that work on the boot will start on Tuesday and will be completed by Friday next week (22 April 2022). 4. This is unacceptable as I need transport this weekend. To add insult to injury, Auto & General has not availed me with a courtesy car since 28 March even though my insurance plan includes unlimited car hire