Well you could buy a call blocking device. They're available online and start about $40. You also could check with your local telephone company and see if *60 is available. Here is some more information for your reading pleasure. http://800notes.com/nb/search?q=call+blockers

Double check your comcast. You should be able to dial *60 to access call screening. press 2 to add numbers up to 25. There should be no charge fir this.

jesus christ its 9:23 am and they called my house and i am on the do not call list. now i have to block this number

Wouldn't say who was calling and tried to get personal information from me.

Called.  No Message.  Blocked.