CUSTOMER SERVICE WHATS THAT????

I have a claim that has been logged on the 13/01/2015. We are now on the 3rd Month and my vehicle has still not been sorted. I have been given the run around from Global Auto body telling me my vehicle is in the washbay, almost ready for collection and next follow up I find that it was not even detected that the computer box was missing...how can a repaired vehicle go from Wash bay -to not having a computer box... GM motors (setting of Computer box )... thats is just odd. Now we find out that the computer box is faulty and had to be ordered it will only arrive on the 18/03/2015. fair enough you can take your time and sort out my vehicle, but what about putting yourself in my position and for once do something that will assist the customer. Knowing fully well that you have been talking nonsense from day one on when my vehicle would be ready, it should be common decency to atleast give me a courtesy vehicle until my vehicle is repaired. This is 3 months later and still my car is not sorted, Come on where is customer service gone to, or let me guess, you should just take the service that you get and be grateful... Why do we pay premiums, is it for this kind of pathetic service?