Fog Light Switch problems of the 2018 Hyundai Sonata

Since the year 2017 when using a portable audio device connected to the power outlet the system turns on and off. Drivers fog light been repaired twice in July 2018. Left fog bulb been removed previously installed found burned grease was added to socket grease was also put on sensor on driver door because radio system was staying on after turning vehicle off,closing driver door and after clicking the alarm to lock door radio was still playing. Driver brake light had to be replaced. September 2018 removed and replaced the fog lamp/drl assembly the socket for the bulb melted,causing the plastic to warp and the connector with new bulb would not lock in. Now the wipers are bad. I'm also having other problems with the brakes and gas mileage but because it can not be detected I'm been told it's nothing wrong with it. Just like when I told them it was something going with the lights but it was nothing they could do. No I'm not a mechanic but I know that I'm not supposed to have all these problems with brand new 2018 model I didn't have do this much repair on use car. I been complaints about this car since I bought it and they just been giving me the run around telling like the gas mileage reading is not going to accurate you sometimes have to just estimate or things go out. I have two Hyundai Sonata the difference is one just another color and I'm not having all these issues with it. At least not yet.