Air Conditioner problems of the 2016 Hyundai Veloster

Recall information: for the past 2 months, I have spoken to my Hyundai dealership regarding my air- conditioning. I know it is not an air-conditioning problem, but that of a regulator or thermister going bad. While driving,the air conditioning will be functioning fine with very cold air. Then at a random or at intermittent times will start to blow extremely hot "oven like" air. I then turn the air-conditioner off. It will then at a later time blow cold air again. I am scared the car will seriously overheat as the air is so intently hot. I am very good friends with a mechanic that within the past year retired from Hyundai for most of his career of 30 yrs. And that what he advised me to inquire about these parts. My sister within the past year has bought a 2017 tuscon/ she just had the same exact situation I do with her air-conditioning and they had a recall on her thermister recently. The thernister was changed and problem solved. I have reported this to my dealership several times. The response when I take my car in is that no code comes up so we can't fix or change anything. They stick a thermometer in the air vents and say all is blowing the correct temperature. So, now it's over 95 degrees with a heat index over 100 degrees in new orleans and my air-conditioning will blow intermittently oven hot air. Even if it is blowing the hot air, how can I possibly drive to the dealership every time it does this and then ceases. It is impossible to predict. So I need to find out what is the course of events to get this situation solved as my dealership is unwillingly to pursue any type of resolution to my situation. I can say, I will never be buying a Hyundai product again. . . As below the dates happen randomly. . . No specific date. . . Mileage is rounded of to approximate. . .

My sunroof exploded spontaneously while driving my vehicle down the interstate. Nothing hit my car or sunroof. It just exploded. I was told that because it was a hot day and that I was running my air conditioner, that glass can "swell and break on its own". The sunroof was closed at the time. It was terrifying, I thought I had been shot. I was covered in glass as was my car. It has since been replaced, but I drive in fear of it happening again.