I recently decided to get the 'Comcast Triple Play' package. Less than a day after the technician installed the VoIP terminal in my home, telemarketers were calling my new number and asking for me by my full name, at the rate of 10 calls per day. Obviously Comcast had sold my new information. A quick search revealed that quite a few others experienced the exact same problem.
This week I called Comcast to complain. In addition to giving me a new number, they agreed to flag it for No Telemarketing. We'll see how that works out, but so far the new number has not been subjected to telemarketing. It's definitely disconcerting that telemarketers can get your information and call you within hours of provisioning, but need 90 days to update their DoNotCall.gov lists.