DoNotCall Site
This has come up before a long time ago but from what I understand, telemarketers are now able to get cell phone numbers which can add up the bills. You can access “donotcall.gov” and list the numbers of both land line and cell phones. If you do it by phone you must call in on the phone for that number. Online you can do three numbers at a time, follow the instructions and you get an acknowledgement. These are good for five years.
Just thought I’d mention it for anyone interested. As far as I know, it doesn’t change the rules–charities and people you contact can call–but it has worked in eliminating cold sales calls dramatically in my experience.