I don't know if this will work, but I just got off the phone with someone at USOC who promised to take my tel. no. off their telemarketing list. I got contact info for this here:
http://www.teamusa.org/Footer/Contact-Us
That page has this info:
To unsubscribe from email, mail, or telephone communications regarding donations, please let us know using one of the following methods:
Email:
[email protected]
Phone:
1 (888) 222-2313
Mail:
United States Olympic Committee
National Processing Center
P.O. Box 7010
Albert Lea, MN 56007-8010