> I just got a "courtesy call" from some dipwad organization...

Here in Italy such a behaviour is considered a crime, except when you expressely give your written consent to such organizations about being called for commercial purposes (the thing applies to mail, phone calls, e-mail and all other kinds of "unsolicited" contact).
U.S. laws like CDA (or any law that the CDA extends) surely have sections that apply to your case.

Regards,
AP.