Unhappy with how Renault SA is dealing with their customer service regarding part ordered for my car

My car is still in for repairs, and the panel beaters are still awaiting a front headlight from Renault SA. I can't understand how Renault France supp**** a incorrect part if the vin number was used to order the part. First there was a delay in the part arriving in SA,then it was wrong. I have been without a car for almost 3 months now and Renault promised to organise a courtesy car, I'm still waiting. No one answers at the customer care centre. This is really bad service. A client cannot be inconvenienced and no one cares.