Contact UsBlackDiamond2016-10-17T20:54:57+00:00 Contact Us Your name * Your email address * Subject Your Message Black Diamond Administrative Company Mailing Address: PO Box 1293, O’Fallon, IL 62269 Claim Phone: (844) 526-0415 Customer Service Phone: (844) 526-0415 Roadside Phone: (888) 754-0371 Administrative Phone: (866) 643-7950 Email: customerservice@blackdiamondadmin.com Business Hours Monday - Friday 8am to 4pm CST Claims Business Hours Monday - Friday 7am to 7pm CST Saturday - 8am to 2pm CST