Speak to a SCAN Member Services Advocate: (800) 559-3500 TTY: 711. Hours are 8 a.m. to 8 p.m., seven days a week from October 1 to March 31. From April 1 to September 30 hours are 8 a.m. to 8 p.m. Monday through Friday. Messages received on holidays and outside of our business hours will be returned within one business day..