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. Complete the Registered Mail Form and submit to the counter clerk.Order Details: Mention the item on backorder and the reason for the delay. The Office of Rent Administration provides assistance and services for tenants of rent regulated homes. Hi there, Been reading posts and educating myself over past few months. Use this letter template to let your customers know that items they've ordered are on backorder and will be shipped as soon as possible. Our staff and crews will work as diligently and safely as possible to resolve your outage issues. A message from Town Supervisor Don Clavin. Register Now Find out more. Home; Products; Support; Claims; About Us; Get A Quote.