One of the main reasons customers request refunds or initiate chargebacks is because they are dissatisfied with the product or service, or they feel misled by the description, price, or delivery time. To prevent this, you need to communicate clearly and proactively with your customers, and set realistic and accurate expectations. Provide detailed and honest information about your products or services, including features, benefits, limitations, and risks. Display your prices, fees, taxes, and shipping costs clearly and transparently. Send confirmation emails, tracking numbers, and delivery updates to keep your customers informed and reassured. And if there are any delays, issues, or changes, notify your customers as soon as possible and apologize for the inconvenience.