Office Address 817 S. San Antonio St. Mason, Texas 76856 Business Hours Monday – Friday 8am – 5pm (closed 1-2pm for lunch) Customer Service Toll Free: 800-292-5457 Local: 325-347-8877 Email: busofc@hctc.coop Questions or Comments? Telephone ServiceInternet ServiceTechnology ServicesBilling QuestionCustomer ServiceOther Δ