Please review this FAQ prior to filing a complaint: https://www.ic3.gov/faq/default.aspx
Do you feel as if you've been the victim of an online scam or fraud? Do you suspect an online person or account might be involved in a fraud? You might want to consider reporting it to the FBI using this convenient online form: https://www.ic3.gov/complaint/default.aspx
DISCLAIMER: filing a fraudulent report is in and of itself a crime.