How to Contact GRS

Hours of Operation // Central Standard/Daylight Time (GMT -0600)

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GRS offices are available Monday - Friday, 8 AM to 5 PM CST/CDT.
GRS is closed weekends and most bank and national holidays.
After business hours you may leave a message with our answering service.

Online // Send us a message

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To contact customer service via our website, please visit Customer Service to submit your inquiry.
You may also email us at your convenience at

By Phone or Fax // Local & International

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To contact GRS by phone, please call 1-800-835-3519 or 620-343-1084.
To contact GRS by fax, please use 620-343-9640.

By Mail

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Please send postal mail to:

Glendo Corporation
900 Overlander Rd.
P.O. Box 1153
Emporia, KS 66801 USA

Checks and money orders should be made payable to Glendo Corporation.