Vidéotron Customer Service Phone Numbers Customer service: 1-877-512-8590 Technical Support: 1-877-380-2611 TECHNICAL SUPPORT: 1 800 561-4248 SUPPORT FOR LARGE-SIZED BUSINESSES: 1-877-380-4667   Vidéotron Headquarters Info, Email, Phone number, Website and live chat Information Founded: 1964 Founder: André Chagnon Headquarters: Montreal, Quebec, Canada .Vidéotron is a Canadian integrated telecommunications company active in cable television, interactive multimedia