Worst service ever

Since the 11 November after my accident has been At renew it panelbeaters. They have supposed to have repaired the fron wheel and rim. My sump and the number was also damaged in the accident. I have been told my car. Is old my sump is rusted my sump had a build up of oil and grunge and now I am being told to service my car which is not drive able and has nothing to do with my sump and bumper. I also have car rental on my policy and I had acar for 30 days in which my problem had not been sorted. They refuse to give me a rental car and since the 20 Dec I have been without transport. I am a single 58;year old that has spent from the 20 stuck at home without transport and I do have health issues and I can't even go to the shop. No one in management has bothered to step in just giving instructions to customer care . No one has bothered I supposed everyone else has their transport and do not give a hoot about helping me in any way.