Walmart MasterCard Customer Service
1-888-331-6133
To Activate Card
1-888-779-2977
Report Lost or Stolen Card
1-888-925-6218
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TTY 1-877-763-0997
Hours of Operation
Monday-Saturday: 8am-10pm (EST)
Sunday: 10am-9pm (EST)
Mailing Address
Walmart Rewards Mastercard
P.O. Box 187 Orangeville, ON L9W 2Z6
Social Media
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