Offer duct cleaning. Call almost every day, extremely annoying! Won't help if you ask to be removed from their calling list- the'll continue calling daily.
They just called me too. When I answered, I couldn't hear what they were saying. After I hung up, I redialed the # to see who it was, & was told that # was not assigned. Another case of out of country/overseas telemarketers camouflaging local #s for whatever criminal intentions!
Called my land line just now in Toronto. After a pause I hear "You are currently the only person in this conference." After another pause I was disconnected.