I used to work for the telemarketing company out of Springfield MO that calls for Pro Acedemix. All you have to is specifically that you would like to be placed on the do not call list. There is a button on the computer the telemarketers can click that removes people from their calling list and they are legally required to do so if someone asks to be put on the do not call list. But be careful how you word your answer, they will only remove you from the list if you say " please put me on the do not call list".