How do I contact support for payment-related issues?

For a payment issue, email admin@oudgo.com, call +84 915 897 356, or use the Contact Us page. Include the order number or attempted checkout time, the payment method category and the exact non-sensitive error message. Never send a full card number, security code, bank password, one-time code, wallet key or account sign-in. Response hours are not promised here until the owner confirms the official schedule.