From Consumer Wiki
Free prizes and gifts or free prize promotions are often offered to consumers through mailings. If you have fallen victim to a free prize and/or gift promotion scheme, you may file a complaint with your local postmaster or nearest postal inspector.
Consumers victimized by fraudulent advertisements offering free prizes and gifts may contact the Office of the Attorney General.
US Postal Inspection Service
Operations Support Group
Attn: Mail Fraud
222 S Riverside Plaza, Suite #1250
Chicago, IL 60606-6100
The Operations Support Group will advise consumers against scams offered by mail. If money is involved consumer will be mailed a complaint form. The Postal Inspector will pursue the claim only after receiving a written complaint. They also handle mail fraud, identity fraud, mail theft, and mail tampering.
Department of Justice
Office of the Attorney General
1301 I Street
PO BOX 944255
Sacramento, CA 94244-2550
(800) 952-5225 (CA Callers)
(916) 322-3360 (Out of State)
(916) 323-5341 Fax
(800) 952-5548 (TDD in CA)
(916) 327-5564 (TDD Out of State)
The Attorney General's office will take complaints about fraudulent advertising for prizes and gifts.
Publications available: Be Smart, Buy Smart - What Smart Shoppers Know About Prizes and Gifts, Prizes and Gifts Fact Sheet, and Rules for Promotional Giveaways