How do i contact horizon therapeutics customer service? For any other inquiries, please call 1-866-479-6742 (Option 2), email [email protected] or submit the below form.What is horhorizon media? Horizon Media wants to help. The company is an independent marketing and media services firm that negotiates, buys, and plans deals across the media spectrum (television, radio, newspapers, billboards, and digital). Its membership in Columbus Media International, a global partnership of independent media agencies, extends its reach worldwide.Is horizon media part of columbus? Its membership in Columbus Media International, a global partnership of independent media agencies, extends its reach worldwide. Horizon Media's client list has included NBC, Caesars Entertainment, Panasonic, and Telemundo. The company has offices in New York, Chicago, Los Angeles, San Diego, Miami, and Amsterdam.