Gendis Inc. Customer Service Phone Numbers Customer service: +1 204-474-5200   Gendis Inc. Headquarters Info, Email, Phone number, Website and live chat Information The company was formerly known as General Distributors of Canada Ltd. and changed its name to Gendis Inc. in May 1983. Gendis Inc. was founded in 1931 and is headquartered in Winnipeg, Canada.