Yah, I have been getting a call a day for a couple weeks, sometimes two. When I answer they hang up and a fax answers when I call back. Seriously, leave me the freak alone!
I just got a call from this number (Caller ID said "Chesterfield, MA"). The guy started talking about chimney cleaning as if he were a robot reading from a script - it was all disconnected phrases. "We are calling about the chimney which is a service connected to your furnace and the carbon monoxide". Seriously that's what he said. I interrupted and asked him where Chesterfield MA is since it's unfamiliar to me. He suddenly hung up on me at that point. I suspect they're fishing to see who is home or not, and that they might actually have no chimney service...