Brake Master Cylinder problems of the 2013 Nissan Maxima

In December of 2016 I was driving my car out of my driveway, and the car would not stop when brakes were applied. This occurred over the course of 3 days, and I took the car to the dealership where it has a service history record. They indicated that the brake booster and the master cylinder were both leaking, and they were going to be replaced. The car was released to me approximately 1 week later. Upon driving the car the next morning at my home the same problem continued to happen. I took the car back to the dealership where they kept the car for 1 week and drove it 300 miles, and they said the car has no problem. I determined that this problem occurs in cold weather. They asked me to come and get the car. In approximately December of 2017 I was backing out of my driveway and I could not stop the car and rolled down the hill into a ditch. The car would not stop. I put on the emergency brake and was able to get the car back into the driveway. Over the next two days, as a test I would start the car to see if I could back the car out of the driveway, and again no brakes to stop the car. I called the dealership and took the car back, where the indicated that the brake booster was leaking and needed to be repaired. They repaired it and a few days later asked me to pick up the car. When picking up the car at the dealership, I placed my foot on the brake to start the car, and the car would not start. The senior service technician came out to evaluate and it took him 4 attempts while vigorously stomping on the brake to start the car. The car was left at the dealership for further evaluation. They claimed a malfunction with the brake switch, and kept the car for several days. Now I have received the car back, and I am still having the same problem. I backed out of my driveway on 01/29/2018, and the car would not come to a complete stop.