Brake Light On problems of the 2020 Hyundai Sonata

The car while I'm driving sometimes the car is unstable also when I turn on the car and I prepare to put it on drive the car apply the emergency brakes by itself. The emergency brake light is on and there is no way to remove it, I have to turn the car on and off continually until finally the car removes the brakes. I was driving on the highway and on the street and while I was doing so the car put on the brakes by itself. One to two months ago I took the car to the dealer and I told them about it but they said that the care needs 2 updates, apparently the car has two recalls. 6 hours later after the update the care wasn't working properly and they kept the car for 3 to 4 days, I got a loner by then. Last week Wednesday 08/05/2020 I took the car again to report the problem and I was told the care would be ready in 5 hours but after 5 hours it wasn't. Since I didn't feel safe in the car I told them to keep the car and give me a loaner because the car is going to take one week to fix because they have to order parts, they want to keep the car but they didn't want to give me a loaner. I contact Hyundai corporate to report this incident because it is twice already, and I was told that someone would be in contact with me in the next 48 hours. I missed the call and I have been trying to call to get in contact with them again to fix the problem but every time I call they come with another excuse. The case manager in charge of the case is garrison and the case number 17216875.