Very bad service and car

I bought a used BMW X3 2021 model from Bidvest Mcarthy Ford The Glen. The salesperson agreed to repair a few scratches on the car but after the sale he informed me that his manager instructed him only to do one scratch. It then took a very long time for them to arrange for the repair.I also had an incident where I had to use the car's hooter to avoid an accident and there was nothing not a sound. I reported it to the branch manager and wanted to know how the car goes through the roadworthy without a hooter?He informed me that he will find out from the test station what is on the report.I took the car for a diagnostic test and there are many faults on it.Besides the hooter not working the rear back electric window stopped working after we had the car for a month.The USB is not working.The rear aircon is not working.Also when I took the car for the scratch repair the guy informed me there was accident damage on the car.The bonnet has been changed and the door colour's are not the same on driver's side.All this after I asked the salesperson if there was any accident damage?After a month already we have received no feedback from the manager as all the other times I had to deal with them.I will never buy a car from this group again. Very bad service.