Disgusting behaviour

I was a victim of a hit and run bumper bashing 2 weeks ago. Discovery insurance asked me to bring the car to car world, which I did. As always, I had no issue with Discovery's assessor and the claim was approved. I was asked to drop the car off at the same place. I got a message saying my car was ready 2 days ago and went to fetch it yesterday. I called on my way to make sure it was ready for collection as I needed to get to work (I am an emergency nurse and my work is literally a life and death job, especially now). When I got there, the car was not there. I was told that there was a slow puncture in one of the tyres and it had to be sent down the road. I waited very long for it to come back and was already late for work. When I got the car, the tyre pressure was still a problem and the light was flashing so I took it to Tiger Wheel and Tyre. They showed me the hole in the tyre which was not related to a previous cosmetic scratch in the tyre from before. And because I replaced one tyre, I had to replace the adjacent one as there was now a 4mm difference in tread. It set me back R6621. My car did not have a puncture going in, but did coming out. But more infuriating than that is that it was obvious from my mileage that somebody had driven my car around 40km. In addition, the Discovery app has recorded the times of these trips, one of which was over an hour. I phoned the manager, Brenda, who could not have been more rude or disinterested if he tried. He basically said I was lying and that there must be a problem with the Discovery app. I have never known the app to record imaginary trips. I asked him if my mileage could lie and he said there is no way to prove that I didn't put the mileage on myself that morning. But the app recorded me driving first to work to explain my problem and make sure things were under control, and then going straight to Tiger Wheel and Tyre, where they fitted my spare and showed me the hole in the tyre. I am disgusted by the poor service and attitude of the manager and hope Discovery thinks twice about sending more clients there. I have reported this to Discovery who said they will email the correct people and contact me. Discovery Insure is very superior in its service and should not be dealing with such ********* people. It affects the brand. I hope my complaint does not go unnoticed. I realise I have a fun sports car to drive but they have shot up my mileage and I don't even know if I'll still get my rebate for driving less during lockdown now.