If you feel that you were deceived by an SEO company in some way, you may want to report it.
In the United States, the Federal Trade Commission (FTC) handles complaints about deceptive or unfair business practices. To file a complaint, visit: http://www.ftc.gov/ and click on "File a Complaint Online," call 1-877-FTC-HELP, or write to:
Federal Trade Commission
Washington, D.C. 20580
If your complaint is against a company in a country other than the United States, please file it at http://www.econsumer.gov/ 2017