Out of pocket because of Momentum.

This all started when I was driving on a gravel like road and I hit something, and I thought it was nothing until I got a warning light that said I must stop, I did stop and I was also told not drive any further so because I have insurance I called them they sent someone to tow the car. This was on the 3rd of June I had also asked for a rental. That was the last I had from Momentum from Momentum. I called them on the 4th to get an update, my claim was not logged nor my car booked. Got the car and all was good then Monday came and the guy that towed my car is asking me what is going on, then I get a call asking me where my car was okay then I sorted all that out. After some time then my car was towed to the local dealership. On the 14th June i received a report and the assessor said it was a mechanical issue and Momentum said they are not responsible. I disputed the report, the was a whole and oil was leaking, I am not a mechanic so I just disputed. Mind you I am the one that has been calling for an update, I am now concerned that my rental car will be due and still no communication until I made a public complaint then on the 20th I was told that it was sent to another assessor only to find out that the assessor will assess the car on the 10th and this was the fastest assessment because it took a day and I got the report the following day. Had all this been done properly I would not be here and I would not have to seek alternative transport because people could not do their work on time. Mind you my car is about 300km away so ya.