Dear [Customer's Name], Thank you for your recent order placed with our company. We appreciate your patronage and business. However, upon reviewing your order, we noticed that the credit card information provided has expired. To ensure a smooth and hassle-free transaction, we kindly request that you update your payment information in order for us to process and fulfill your order promptly. Please take a moment to update your credit card details by [insert specific instructions, such as logging into your online account or contacting our customer service department]. As a valued customer, we want to make it as convenient as possible for you to update your payment information. Your satisfaction is important to us, which is why we have included multiple options for you to update your credit card details. You can choose to update it online through our secure portal or by contacting our customer service representatives via phone or email. By promptly updating your payment details, we can ensure that your order will be processed without any delays or cancellations. We strive to provide top-notch customer service and want to ensure that your shopping experience with us remains exceptional. Please note that failure to update your payment information within [number of days, typically 7-10 days] may result in the cancellation of your order. We would hate for you to miss out on the items you have selected, so we kindly request that you take immediate action to prevent any inconveniences. If you have any questions or require assistance while updating your credit card information, our customer service team is readily available to assist you. We can be reached at [provide customer service phone number] or [provide customer service email address]. Thank you for your cooperation and prompt attention to this matter. We greatly appreciate your business and look forward to serving you again in the future. Sincerely, [Your Name] [Your Title/Position] [Company Name]