I think they talke the do not call list as a DO call list. Since the cell phone one came out, I did not put my number on that list and surprise, surprise, I am not receiving unwanted phone calls.
There's a caller ID box on amazon, http://www.amazon.com/Caller-Phone-Ring-Control-Completed/dp/B0007R5TQ6/ref=wl_it_dp_o_npd?ie=UTF8&coliid=I10E9MDK64MOG9&colid=1T8DOUJCURS45. The reviews are varied.
Dial *67 if you live in the Dallas GCA . Then dial 2142698809 , you may get teh Boiler Room with someone telling you that " This is Best Buy " . If you are out of the Dallas GCA , you may have to pay a tool call charge if you want totalk to this bunch of morons . Sick of Calls .