Priority Service If you place a Priority Service Sunday School curriculum order for the entire year, your material will ship automatically to you about 4 to 6 weeks before the start of each new quarter. You will receive a Priority Service Update Form in the mail one month before the deadline to update your order. If you have not changed your order by the specified date, your order will be shipped as the Priority Service Update Form indicates. You may update your Priority Service order over the phone at 800-695-3387. To cancel a Priority Service order you must call before the date indicated on the Update Form or the materials will be shipped as they appear on the form. All return fees will apply. If you cancel an order and wish to reactivate the account, you must call our customer service department and inform them.