The national credit bureaus offer a toll-free number that enables consumers to opt-out of all pre-approved credit offers with just one phone call. Call 888/5-OPTOUT (888/567-8688) for more information.

Direct Marketing Association (DMA) Click here for a DMA form letter
Mail Preference Service
P.O. Box 9008
Farmingdale, NY 11735-9008
www.the-dma.org
email: consumer [at] the-dma [dot] org
To remove your name from a nationally-based advertising list, contact the DMA with your name and address. It costs $5 to do this online, or you can fill in the form, print it and mail it in at no cost.

Direct Marketing Association (DMA)
ConsumerLine
1111 19th Street, NW - Suite 1100
Washington, DC 20036
www.the-dma.org
email: consumer [at] the-dma [dot] org
Resolves complaints between consumers and mail order companies. Send a written complaint with all details.

Federal Trade Commission (FTC)
Consumer Response Center
10877 Wilshire Blvd., Suite 700
Los Angeles, CA 90024
877/382-4357 toll free- to file a complaint
310/824-4343 Western Region
202/326-2100 Washington, DC
www.ftc.gov
Online consumer complaint form
email for consumer response center: crc [at] ftc [dot] gov
email with "spam" complaints: uce [at] ftc [dot] gov
Regulates a multitude of business practices and administers consumer protection laws. Areas of jurisdiction include: false advertising (including the internet), deceptive labeling, debt collectors, warranties of nationally distributed products, state-chartered banks and credit unions, credit card companies, credit reporting agencies, and mail order companies. The FTC does not handle individual complaints, but if it gets enough accusations about a particular company or practice, it will investigate. Write, call, or use the FTC's website to receive a complaint form.

San Diego City Attorney
Consumer and Environmental Protection Unit
1200 Third Avenue, Suite 700
San Diego, CA 92101-4106
619/533-5600 helpline
http://genesis.sannet.gov/infospc/templates/attorney/complaint_form_eng.pdf
email: cepu [at] sandiego [dot] gov
Investigates and prosecutes crimes committed in the City of San Diego involving public heath, consumer transactions such as misleading advertising, environmental pollution, and other unlawful business acts and practices.

U.S. Postal Service
Postal Inspection Service
P.O. Box 122110
San Diego, CA 92112-210
619/531-8250 hotline
www.usps.com/postalinspectors/
Online mail fraud complaint form
Handles problems about mail fraud, mail theft, mail solicitations, and chain letters. The USPD prefers calls about these matters, but complaints can be sent by mail.