Alternator/generator/regulator problems of the 2017 Hyundai Elantra

In January of 2019,my car began shutting off while I was driving. The battery light would appear on the dashboard before the car would completely shut off. I tried to have it fix but nothing worked. I'm September 2019, as I was driving 60mph on the highway, I suddenly heard a loud noise after which my car shut off and would not start again. I was able to have it towed to the nearest Hyundai dealership and was told I needed a new alternator, battery, and there was a misfiring. All these issues were�fixed�. My car has continued to shut off and I had to bring the car back to the dealership at which I was told they could not find anything wrong with the car. Something is seriously wrong with this vehicle and I am anxious and scared to drive this car. I have had to buy 3-5 batteries since purchasing this vehicle in 2016. My car is currently at the dealership due to this issue.