800-966-6546 How do you contact Walmart customer service? Phone Number: The best number to call to reach a human at Walmart Customer Service Department is listed below: Walmart Customer service: 1-800-966-6546. How to Speak to a Live Person: Call 1-800-966-6546 and you will get the auto attendant. Press 2, 3, 8, then 5 to skip the automated system ...