File a complaint against a business with BBB, search for a business to file a complaint against, or find out the status of a complaint you submitted. File an Online Complaint.Postal Inspectors suggest that, before completing a business transaction, contact the Chamber of Commerce, Better Business. Send postal service file complaint via email, link, or fax. You can also download it, export it or print it out. 01. In addition to the webbased public complaint form you can download and complete this pdf version. Use our consumer assistance directory and sample complaint letter to file a consumer complaint. I would like to issue a complaint against Tactical Marketing who is sending me unsolicited advertising emails from Life Lock and others. 7460 Notice of Proposed Construction or. Business in the nation through the mail very seriously.