Called about 4 pm today(10/23), leaving only silence on my answering machine. Caller ID said Arlington, MA, where I know no one, so this number is now blocked.
Picked up a call from them at 4:36 PM today. A woman asked for the person responsible for the electric bill. I asked what she wanted; she replied that she wanted some information from my electric bill. I then told her I would not give her any information, I was not interested in changing my electricity supplier, I was on the "Do Not Call" list, and I did not want to hear from her again. I disconnected the call.
Obviously a telemarketer, possibly selling an alternative energy supplier.