Engine Shut Off Without Warning problems of the 2013 Buick Regal

My name is ryan conrad, I own a 2013 Buick Regal turbo, about 4 months ago I started having electrical issues with my car ( stereo shuts on and off while driving, dash lights flicker ). Thinking my car needed a new battery I had the battery replaced. No problems for about a month. Not long after, the problem came back, except this time the car shut off while driving, causing all electronics to stop working, including the headlights, power steering, and brakes. I drove it to a gm dealer right away. 1 week goes by and I get a call back saying they couldn't re-create the problem. I pick the car up and within one day it stalls again, this time driving at night on the highway. Again I bring it right to the gm dealer. Another week goes by and I get a call saying they replaced the bcm ( body control module ). As I was driving to work this morning, about a month after the repair, the stereo shuts off, soon after the dash lights flicker, and almost right after the dash lights started flickering the car shut off, the doors unlocked, and I lose the power steering and power brake assist causing me to lose control of the vehicle around a sharp turn and nearly crash. I'm honestly afraid to drive this car now, and I'm not the only one who has had this happen to them. I spent a good 2 hours reading peoples stories online about how they had the same exact experience and how they are also afraid to drive this car. The dealership is unable to fix my car and now I'm stuck with a car that is worth less than what I owe on it, a car I have to worry about driving, a car I'm afraid to have passengers in due to this major safety issue. If an accident occurred as a result of this malfunction I would imagine the malfunction would prevent the airbags from deploying. Before I bought this 2013 Buick Regal I was driving a 1992 Ford f-150, and its sad to say I felt a lot safer in an antique truck.