File Consumer complaints

The IC3 was established as a partnership between the Federal Bureau of Investigation (FBI) and the National White Collar Crime Center (NW3C) to serve as a means to receive Internet related criminal complaints and to further research, develop, and refer the criminal complaints to federal, state, local, or international law enforcement and/or regulatory agencies for any investigation they deem to be appropriate. The IC3 was intended, and continues to emphasize, serving the broader law enforcement community to include federal, as well as state, local, and international agencies, which are combating Internet crime and, in many cases, participating in Cyber Crime Task Forces.

The Federal Trade Commission
The Federal Trade Commission is the nation's consumer protection agency and collects complaints about fraudulent, deceptive, and unfair business practices. If you think you may be a victim of fraud, file a complaint with the FTC.

FDA's Consumer Complaint Coordinators (CCC's)
Some examples of complaints that your CCC wants to hear about are
food-related illnesses,
allergic reactions when a person has a known allergy to ingredient not identified on the product label
problems related to infant formula
problems related to baby food
swollen or leaking canned goods
suspected product tampering
adverse events after taking dietary supplements
problems related to prescription medications
problems related to pet food and treats

The Better Business Bureau accepts complaints from consumers against businesses or services, and is dedicated to fostering an ethical business environment.
Your State Attorney General
you can also file a complaint with your state Attorney General's office if you think you may be a victim of fraud. Your state Attorney General's office handles a wide range of complaints related to consumer protection.