Google search engine seller- they tell you they want to ensure that your listing is correct. After they checked my listing, they searched my business on Google. Once they found that I was already listed at the top of my category the operator disconnected me.
Had calls from this number yesterday (11/23/2012) and today. Caller ID: Top Googlepages. Both times I picked up the phone and immediately hung up. If it happens again I will blow a police whistle in their ear.