[Your Name] [Your Title] [Your Company/Organization Name] [Address] [City, State, ZIP Code] [Email Address] [Phone Number] [Date] [Customer's Name] [Customer's Title] [Customer's Company Name] [Address] [City, State, ZIP Code] Subject: Notice of Inability to Fill Orders Dear [Customer's Name], I hope this letter finds you well. I am writing to notify you of our regrettable inability to fulfill your recent order, placed on [date]. We apologize for any inconvenience this may cause and assure you that we are actively working on alternatives to mitigate this situation. Due to unforeseen circumstances, we have encountered a shortage of inventory, primarily caused by [provide a brief explanation for the shortage]. Despite our concerted efforts to rectify the situation promptly, we have been unable to secure the necessary resources within the required timeframe. Please rest assured that this situation is exceptional, and it does not reflect our usual commitment to customer satisfaction. We value our relationship with you and understand the importance of fulfilling orders promptly and efficiently. We are committed to resolving this issue promptly and effectively. At this time, we would like to offer you the following options: 1. Substitute Products: We have identified alternative products that are similar to the ones originally ordered. We can provide you with detailed specifications and pricing information on these substitutes, allowing you to decide if they meet your requirements. 2. Delayed Fulfillment: If time permits, we can place your order on a back order status and ensure delivery as soon as the required inventory becomes available. We will keep you informed about the estimated restocking time for the specific product(s) you ordered. 3. Order Cancellation: If neither of the above options meets your needs, we completely understand and respect your decision to cancel your order. We will arrange for a full refund and provide any necessary assistance to ensure a smooth process. We sincerely apologize for any inconvenience caused by these unforeseen circumstances. Your satisfaction is of paramount importance to us, and we will do everything within our capacity to prevent such situations in the future. If you have any questions, concerns, or would like to discuss these alternatives further, please contact our customer service department at [phone number] or via email at [email address]. Our dedicated team is available to assist you and address any additional queries you may have. Once again, we deeply apologize for the inconvenience caused by this delay, and we thank you for your understanding and patience. We genuinely appreciate your support and look forward to serving you in the future. Thank you for your attention to this matter. Sincerely, [Your Name] [Your Title] [Your Company/Organization Name]