FourFourtwo.com/FourFourTwo/4FourTwo.aspx?xid=81488 article Walmart Customer Service – Walmart customer services and credit collection services – DMP Services (Credit Card & Visa) are now available at Walmarts online store.If you are using DMP services at Walmart, the service provider has the option to send you a credit card authorization number.Once you have received your credit card, you will be asked to create […]