No Feedback (Car Repairs)

It's been almost 3 weeks now and I still don't have my car, no feedback or response from N4 Autocraft or King Price. I was involved in a bumper bash and took my car in Monday 18 June 2018, a lady from N4 then phoned me to tell me that my car has been stripped (Tuesday 19 June 2018). On Thursday 21 June 2018 they phoned again stating that they have received the parts and that they will keep me updated on when I will receive my car (no feedback since). I phoned King Price Wednesday 27 June 2018 asking for an update an to extend the rental - the rental was extended but still no feedback on the status of my car. I again phoned, Thursday 5 July 2018 asking for an update - the lady that assisted was very helpful but had to request feedback again this after I requested an update the previous week (she mentioned that a note was made requesting feedback but still no response). I keep receiving messages from the car rental company to return the car, I need to return the car today 6 July 2018 but I can't due to the nature of my job and being in IT (I have requested that the rental be extended - also no feedback). Can someone urgently attend to this and extend my rental as I will not be paying additional fees, I also require an urgent update on the status of my car and when it will be completed).