I love my car I brought it a year and a half ago m...

I love my car I brought it a year and a half ago my issue is before I brought the car I saw there's a problem with the headlights so dem I can't drive at night, the sales woman told me that they would replace them I return to the dealership four times, a year and a half later they still have not replaced them sales manager claimed it was a manufacturer's fault not their responsibility and instead they tried to sell me a new car!!