Bad quality service and vehicles

Recently bought a pre-owned vehicle from them and discovered a few issues with the vehicle within a week of the purchase. I pointed these issues out to them and they refused to repair them. Mind you, this car is still under warranty. The color on the fender of the car is starting to fade within less than a year. Clearly buying a car from Nash Nissan doesn't guarantee that the vehicle was inspected for Nissan stamp of approval. Utilise their services at own risk.