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 2010 Friday, January 1 Monday, February 15 Monday, May 31 Monday, July 5 Monday, September 6 Thursday, November 26 Friday, November 27 Thursday, December 23 (1/2 day) Friday, December 24