Contact us
Corporate Office
1800 E. 50th Street N.
Sioux Falls, SD 57104
Toll-Free: 1-800-843-5624
Local: (605) 332-5531
Fax: (605) 332-6016
Dispatch Fax: (605) 332-2510
Satellite Office
5172 Patricia Blvd.
Guymon, OK 73942
Toll-Free: 1-800-611-1283
Local: (580) 338-0620
Fax: (580) 338-0727
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