Poor workmanship, poor service and poor communication

The company had my car for a month and did an extremely poor job panel beating my car. They then said they would replace the panels. I have been waiting since the 23 September for them to make a courtesy car available so that they can do the required repairs. Its now over one and a half months and they are unable to tell me when the repairs will be done. Not only has there been a delay, I have had to repeatedly call the company for updates which they either don't provide or they don't return calls.