This number called our business today at 1043 hours.  Caller ID said "Cambridge MA" so I was immediately suspicious because that's a hallmark of a scam artist.  I picked up the phone but said nothing.  I could hear activity on the other end so I knew it was a spammer or a scammer in a call center.  When a guy gave an inquiring, "Hello?" I answered.  He then said his name was Andrew and he needed to talk to the person in charge of the National Grid bill.  I slammed the phone back down.  So, yeah, it was a spammer/scammer trying to convince us that they can save us money if only we'd give him the information from our electric bill.  Not happening.  The number they're calling from is VoIP and it doesn't even come back as a particular company, so not someone I'm going to do business with.