I agree totally with you Bill. We gave up our land line awhile back but I feel the same way about the door knockers. The other day the doorbell rings ( I do have a little sign by the doorbell not to call ) anyway, I go to the door and it's someone that wants to clean one room of carpets for free. I point out the sign and I am told " we're not selling anything we want to clean a room for free ! No way I'm letting you in my house guys and how many people that want their carpets cleaned are just waiting for someone to come to the door ?