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.

[email protected]
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 2020 Calendar year:

  • January 1, 2020: New Year's Day
  • January 20, 2020: Martin Luther King Day
  • February 17, 2020: President’s Day
  • May 25, 2020: Memorial Day
  • July 3(observed), 2020: Independence Day
  • September 7, 2020: Labor Day
  • November 26, 2020: Thanksgiving Day
  • November 27, 2020: Day after Thanksgiving
  • December 25, 2020: Christmas Day

Online Learning Management System

Frequently Asked Questions