Important record keeping is key to defending yourself against a chargeback. Here’s a checklist to help you respond: 1. Follow the instructions on the chargeback notification, 2. Respond by the due date listed on the notification, 3. Address your customer’s concerns with a written reply, 4. Provide copies of all transaction documents, including, but not limited to: A. Order forms, B. Invoices , C. Contracts, 5. Make sure you respond to all retrieval requests on time and accurately. For fast and easy access to view and respond to disputes, log in to Merchant Portal