The terms and conditions of this agreement replace all previous agreements, proposals or assurances relating to the service. You cannot terminate this agreement without our prior written consent. We can give up this agreement freely. If you leave the service on your site, your current schedule will not be able to be transferred to a new location. Changes to this Agreement or additional or other conditions in your orders, confirmations or other documents are not valid unless we have expressly agreed in writing. Communications or receivables or other communications, pursuant to the terms of this Agreement or a statute, are disclosed in writing. Unless otherwise stated in this agreement, communications must be made to the legal department and sent to the address listed below by an internationally recognized first-class U.S. mail or post-press courier. Communications are deemed to have been issued at reception if they are sent to the U.S. Postal Service by express mail or three (3) days after delivery.