Speed of Service not in line with Courtesy Car

My Car was ****** and recovered by Tracker, my insurance took about a week to recover it from the police impound and another week to decide whether or not to fix it. The repairs and delays have taken over 30 days, as a result my 30 day courtesy car period elapsed. My insurance has left me without a car for over two weeks and refuse to reinstate my courtesy car. The reason for the delay currently is due to an inability to decide on whether or not my car should be written off. I have been calling almost every weekday to find out the status of my claim and have been met with little to no sympathy. I was told that the manager of the call centre will contact me since last week and have heard nothing since. I was told I would be given feedback about the status of my claim every day and have received none without solicitation. I AM UPSET, FED UP AND GOING BROKE DUE TO THE ALTERNATIVE ARRANGEMENTS I HAVE HAD TO MAKE AND MY INSURANCE CANNOT INFORM ME OF WHEN I CAN EXPECT A DECISION TO BE MADE! THIS COMPLETELY UNACCEPTABLE SERVICE!!!! What should I do now? This is impacting my employment and family life.