Customer Service We provide technical support around-the-clock. Just give us a call (970) 337-1300 and listen to the prompts. A technician will be paged if your call is after-hours. San Isabel Telecom Holiday Schedule 2008 Tuesday, January 1 Monday, February 18 Monday, May 26 Friday, July 4 Monday, September 1 Thursday, November 27 Friday, November 28 Wednesday, December 24 (1/2 day) Thursday, December 25