Every complaint is important to us. A consumer protection demand letter, sometimes referred to simply as a 30 day demand letter, is a formal notification.Order Details: Mention the item on backorder and the reason for the delay. "Hi, thank you for reaching out! Below, you'll learn tips for reaching out to excustomers. Then, we'll explore example letters you can send to get them back. A good business apology letter to customers can make up for bad service, errors with orders, and more. Use this letter template to let your customers know the items they've ordered are on back order and will be shipped as soon as possible. The letter must outline your complaint, the harm you suffered, and how you want the problem resolved. This is called a 30 Day Demand Letter.