car not repaired till to date

Worst service ever my car was booked off at Greenstone on the 13Th of November, I was patient with them for a very long time, last week they told me they received the parts which they ordered on a week before, even now since last week Wednesday they still fixing the gear box, tell me in this whole world does it take a week to fix or fit a gear box, I am fed up with their service my insurance has authorized but I regret taking my car there, and I still have to pay R8500 for excess with this kind of service mxm, my car is my only means of transport and without it I have to taxify almost everyday that's another R6000 of expense mxm