Car back at Renault

Previously had complaints about my Renault brand new sander and they have replaced the tdc sensor 4 times already as well as replaced a boot lock in the first 6 months of having the car, my car is back at Renault for the same problem, customer care is not a customer care, I left my car there last week Wednesday I have not been given a courtesy car or called just been told a Renault tech is looking at the car, I do not want this so called \car"back this is pathetic and I would advise no one to ever buy a Renault its as good as throwing your money in the bin!!! ********** service from Sharon and Jay"