Hudson’s Bay Customer Service Phone Numbers Customer service: 1-800-521-2364 GIFT CARDS: 1-800-521-2364. CREDIT CUSTOMER SERVICE: 1-800-263-2599   Hudson’s Bay Headquarters Info, Email, Phone number, Website and live chat Information Founded: 2 May 1670; 348 years ago Headquarters: Simpson Tower Toronto, Ontario, Canada Number of locations: 90 Area served: Canada, Netherlands Hudson’s Bay is a chain of