Lack of service

My Renault has been sitting at Renault Pinetown for close to 2 months. My vehicle is used for work purposes and I desperately require a vehicle. I require at least a courtesy vehicle, which I was never offered. I was advised by Renault Pinetown that the parts to repair my vehicle will take at least 2 to 3 weeks. Why didn't they order the part during the 2 months whilst my vehicle was sitting in their workshop? Poor service