Bad service from Momentum and their partner Dals Libertas

I have been involved in a car accident on the 12th of May 2020,till today I don't have the car, no one is helping me from the insurance side and they are not taking the panel shop company named Dals libertus, they have done a terrible job I had to return the car to them, no quality check was done, even momentum never sent anyone to do quality on the job done by them until I complained, now it's August I have been moving up and down with no help from the insurance and the guys at Dals are telling me some of the things can't be fixed because parts are discontinued.

How do you then fix a car half way and you tell me some of the parts are no longer available what do I do then with the car that was supposed to be fixed and it's half fixed, I want genuine parts on pirate parts that won't last like the door handles when they brought the car they were broken. Who do I go to if my own insurance does not back me up which such service providers. Also even though i have not been having a car all this time the monthly premiums are being deducted no one is helping me.

It's lunchtime no one is replying to my emails even the lady that was helping me, the Dals guys are forcing me to take the if I don't take it I will be paying a storage fee. The car was sent for repairs of which it's not repaired fully and they want me to take the car and I won't take it.