Unhappy Customer

I bought my car 5 months ago and the on the 12th of Jan 2019 it would not start, Renault towed and sent it to Princess Crossing on the 14th of Jan. Since then I have been the one calling asking what is the status on my car, and I even asked for a courtesy car but was told that I could not get one unless the part needed is on back order. Now I am being told that the part is on back order and I can only get a courtesy car 10 days after the part has been ordered. I have not had a car for 12 days and as a new customer I was not expecting such treatment. And Nass the lady assisting me was very rude telling me I am not the only customer being assisted.