Battery problems of the 2002 Volkswagen Jetta

Battery continues to drain over night. Changing batteries did not solve the problem. Online forum points to radio draining the battery. Pulling fuse and resetting radio tends to stop the process, but then it returns after a couple of days.

After I was pulled out of a parking spot, the doors clicked as if they were going to lock automatically as they normally do at 10 mph. The click sounded funny, so I looked at the door locks and noticed that they hadn't locked. Soon thereafter, the battery on the car stopped, which I noticed because I couldn't accelerate and I couldn't turn the steering wheel. I started the car again, without a problem. The airbag light went on and stayed on and I noticed that the lights in the back seat over the doors stayed on though. I traveled to my next stop and the lights in the back seat went out. I then started toward my next stop and had reached 25 mph when the side airbag in the driver's seat exploded. I called the dealer to see if the car was safe to drive, they said it was. I then started driving to the dealer when the battery cut out again; I could tell because I could not steer and I could not accelerate. I pulled over to a safe spot and called for a tow truck. While I was sitting in the parked car with the a/c on waiting for the tow to arrive, the passenger-side curtain and seat airbags deployed. The car is currently at the dealer so they can investigate if there was a malfunction. No, I'm not kidding, that's what they said.

The anti-slip resistance light comes on, indicating it's not activated, while driving. Car jolts, which means it does deceleration and sudden acceleration. The battery light comes on while in reverse. Car totally dies when this happens, driver can do nothing except brake, it means not steering at all.