Headlights problems of the 2019 Nissan Sentra

Hello I purchased a new vehicle on the 4/28/2019 zero miles. When first buying the vehicle there were no problems. However after 4 to 5 months pass by I noticed my headlights are fading away as well as the paint of the vehicle and windshields. When taking the car to the dealership tthey said they cannot help me. They are claiming the damage is natural cause and want to charge me money to restore the headlights, paint, and windshield on a brand new car. I informed the dealership I came to buy a new car with zero problems including the headlights and paint and windows and still they denied me help. After informing them I lost visibility on the road do to the headlights not working the did not care. I'm scared driving at night, I can't see far do to the headlights and windshield not working properly and its nearly only been 6 month. When taking the vehicle to my makanick he informed me that my lights were polished including detailing of the paint and window before the vehicle was sold to me the vehicle was made to look new. He explained to me at 4 to 5 months the polish would removed and the car will be left looking like how it is know. After that event I came to realize I been scammed by the dealership and no one wanted to helped me. I looked for help for a month driving with blurry headlights and windshields. When I search for help on youtube and found your firm number.