Captioning complaints can be filed with the video program distributor (VPD), which is typically the TV station or cable company. The FCC provides a registry that can be used to find your VPD contact. Complaints can also be submitted to the FCC, either online, by fax [1-866-418-0232], or by writing to:
Federal Communications Commission
Consumer and Governmental Affairs Bureau
Consumer Inquiries and Complaints Division
445 12th Street, SW Washington, DC 20554