2024 BUICK ENVISTA Forward Collision Avoidance Automatic Emergency Braking Problems

I was driving and while trying to put on brakes and stop I couldn't . I noticed that the Antilock Braking System light came on along with other lights. I almost hit a car because I could not stop. I was very frantic and scared. I could have hurt someone including myself. I am still shaken by this. I called roadside service and they towed it to Suntrup Buick in St. Peters Mo. After the car was delivered to them they called me 30 minutes later saying "no lights are on". I told them I have onstar and if they would like I can send them the alert they sent on my app. The alert is still there which says "Schedule service now". Braking system requires your attention now". I also have snapshots of the warning notice. I don't want a vehicle that has brake issues ..this could have cost...