Contractor Stalking

In my renewed attempts to spend a lot of money fixing my house, I am getting bolder in tracking down a contractor. I saw some guys working on a house on the next block, so I asked them who they're working for. They gave me a first name and a phone number.

After I called the number, my phone's address book filled in more information for me. The number was already programmed into my phone! The contractor is the father of one of my students from the fall.