unacceptable customer treatment!

I was involved in an accident on the 30 August 2020 and I only received the authorisation of my claim on the 15th of September 2020. After a number of times calling MiWay to provide me with feedback. Only today the F.R PANELBEATERS saw that my claim was authorised on the 15th of September 2020. I am so unhappy with MiWay and how slow they WORK! They didnt take me seriously and I had to keep calling to find out, how far is my claim! I am soo unhappy with the treatment I am getting from MiWay! Now I am using a hired car in which I need to take it back on the 1st of October 2020. I am advised by F.R PANELBEATERS that they wont be done by the 1st of October 2020. How I am supposed to get to work??? This is unacceptable.