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Contact Information
HDI Corporate Office
102 S. Tejon St., Suite 1200
Colorado Springs, CO 80903
Phone: 800-248-5667
Fax: 729-268-0184
Email: support@thinkhdi.com
To register, please select register online or call our customer service center at (800) 248-5667.
To expedite your registration, please have your Visa, MasterCard or American Express card available when you call, or mail your payment by check or credit card. Billing is available. Invoices are payable upon receipt and prepayment (or a federal government purchase order) is required prior to attendance Please make checks payable to HDI.
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