calls but doesn't say anything when I answer

Got multiple calls today, so when this came I was already touchy.  Call came through as 'Unknown name', guy asked for Mr and Mrs...  Then said he was Ken and started talking about chimney sweeps.  I told him I was on the do not call list and was taking this complaint to the AG

I suppose I should really try to keep them on the phone longer and find out more info...

Called my house asking for someone who doesn't live here. Asked if I lived on _____ st. The guy had had my street name, but not address, and the incorrect name of the resident of the house. I couldnt understand what he said he was calling to schedule. I told him he had the wrong number and he asked if I lived on _____ st. I said yes, but what house # did he think he was calling, since he had the wrong name. He said it didn't matter the house # as long as I was on _____ st. I said we weren't interested, and he hung up. Creepy.

Keep getting calls from this number after telling them I am on the DNC list! Frustrating, They are in the same state as me and I would like to find out where their address is so I can go 'clean their chimney'

Getting very tired of calls from people who hang up, even though we are on the no-call registry. Don't even have a chimney.