Poor service delivery to client

Worse experience ever, on the 3rd March 2022 I was involved in an accident. Insurance arranged for car to be towed and nominated Dube auto body Pty Ltd to fix my car. Approval was granted on the 15 March 2022. On the 17 March 2022 curtersy vehicle first 15 days lapsed and they extended for another 15 days which lapsed on the 2nd April 2022. Surprisingly my car was still not worked on. Dube autobody claimed that they only got the approval on the 28th March 2022. After constantly communicated with the insurance Dube autobody took the blame about receiving the approval late. Nevertheless they agreed to take care of the ost implication for curtersy car. After they have agreed in few hours they changed the agreement of making extention on curtersy car saying they have car for me. Went to them to get the car on the 1st March 2022, surprisingly the car was aygo car😳. Never the less took the car knowing and hoping will get my car before Easter weekend. As of today I am still with out my car and they insurance does not take care of me as their client. How must I travel with aygo car with my family with laggages? Pathetic 😡. Taking a curtersy on insurance you avoiding to be inconvenienced any how. How on earth one be without a vehicle for 40 days? This is really rediculours I'm disappointed from my insurance. I am not having peaceful mind at all.