HDI Customer Care Center

The HDI Customer Care Center operates from HDI's headquarters in Colorado Springs. From taking orders to resolving customer concerns, our team is happy to assist you with any HDI-related matter. Contact us with questions about products, services, purchases, account histories, or anything else you may need.

support@thinkhdi.com
800.248.5667 - Worldwide
719.268.0174 - US

Hours

Monday – Friday
9:00 a.m. – 7:00 p.m. ET
8:00 a.m. – 6:00 p.m. CT
7:00 a.m. – 5:00 p.m. MT
6:00 a.m. – 4:00 p.m. PT

Closures

Please note that HDI observes the following holidays for the 2018 Calendar year:

  • January 1, 2018: New Year's Day
  • January 15, 2018: Martin Luther King Day
  • February 19, 2018: President’s Day
  • May 25, 2018: 1pm close, Friday before Memorial Day
  • May 28, 2018: Memorial Day
  • July 4, 2018: Independence Day
  • August 31, 2018: 1pm close, Friday before Labor Day
  • September 3, 2018: Labor Day
  • October 8, 2018: Columbus Day
  • November 21, 2018: 1pm close, Thanksgiving Eve
  • November 22, 2018: Thanksgiving Day
  • November 23, 2018: Day after Thanksgiving
  • December 24, 2018: Christmas Eve
  • December 25, 2018: Christmas Day
  • December 31, 2018: New Year's Eve 
  • January 1, 2019: New Year’s Day 2019

Online Learning Management System

Frequently Asked Questions