Texas Utilities Code - UTIL § 64.157. Disputes

(1) order a billing utility or service provider to produce information or records;

(2) require that all contracts, bills, and other communications from a billing utility or service provider display a working toll-free telephone number that customers may call with complaints and inquiries;

(3) require a billing utility or service provider to refund or credit overcharges or unauthorized charges with interest if the billing utility or service provider has failed to comply with commission rules or a contract with the customer;

(4) order appropriate relief to ensure that a customer's choice of a telecommunications service provider is honored;

(5) require the continuation of service to a residential or small commercial customer while a dispute is pending regarding charges the customer has alleged were unauthorized;  and

(6) investigate an alleged violation.