Get 4 email templates you can send out to customers when their order is delayed due to production issues. Our free customer apology letter templates and comprehensive guide make it easy to craft an effective customer apology.In this article, we'll cover everything you need to know about writing apology letters and provide 5 templates you can use to get started today. In her final year overseeing Bexar County's elections, Jacque Callanen used up the last of the paperclips that brought down her predecessor 22 years earlier. 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. Our three new billboards went up today! Say that you are sorry and regret that you could not deliver the order on time,and tell them why it was not delivered on time. Example: "We truly regret any inconvenience this has caused you. It was our mistake and we take full responsibility for it. Begin with your sincere regret for not appearing for work.