I've done something kinda similiar with the phone..
A few years back I was the only one in the office and I called home. As I called home the office line rang so I hung up and answered the office line. The person had hung up on me.
So I pressed redial and the exact same thing happened. The third time I was so pissed at whoever was crank calling me until I finally realized I was calling myself as I had dialed the office number instead of the home number
