Walmart Customer Service Phone Numbers Customer service: 1-800-328-0402 Walmart Rewards Mastercard: 1-888-331-6133 Product Protection Plan: 1-855-308-7295 Walmart Gift Cards: 1-888-537-5503 Photo Centre: 1-855-620-7592   Walmart Headquarters Info, Email, Phone number, Website and live chat Information Founded: July 2, 1962; 56 years ago Rogers, Arkansas, U.S. Founder: Sam Walton Headquarters: Bentonville, Arkansas, United States Number of locations: