Dollarama Customer Service Phone Numbers Customer service:  514-737-1006 Montreal area: 514-737-1006 #1000 Toll Free: 1-888-755-1006 #1000   Dollarama Headquarters Info, Email, Phone number, Website and live chat Information Founded: 1992 Headquarters: Mount Royal, Quebec, Canada Key people: Neil Rossy, CEO, Larry Rossy, Executive Chairman Dollarama Inc. is a Canadian dollar store retail chain headquartered in Montreal. Since 2009, it has been Canada’s