HAUNTED WINDOWS PHONE

I woke up in the middle of the night because I heard voices. No I was not dreaming, and it was not aliens. Apparently, my Lumia 920 decided to wake up and call one of my contacts all by itself. What I was hearing was someone's voicemail. The next day, my cousin called me to see if everything was ok, confused as to why I had tried to call in the middle of the night.

On 2 other occasions, I was awakened by a bright light. Looked over to my night stand and saw the lock screen bouncing up and down on it's own. Then, It flicked up all the way, opened the people hub and started scrolling around in there, all without any interaction from me.

Anyone else experience this weirdness? A reboot seems to stop the demons temporarily.