Home Change in Service Change in Service Relocating or closing your office? Looking to change or expand services? Thank you for being a Securitas Technology customer. We are committed to excellence and strive to make any system modifications in a timely manner. All changes in service or subscriptions must be made by an authorized system administrator. Please complete the form or call 1-855-578-2653 to start the process. Our expert customer service team will answer your questions as quickly as possible. If you need to discuss an urgent monitoring issue, please call 877-476-4968.