Tex. Utilities Code § 17.151

(a) A service provider, retail electric provider, or billing agent may submit charges for a new product or service to be billed on a customer's telephone or retail electric bill on or after the effective date of this section only if:

(1) the service provider offering the product or service has thoroughly informed the customer of the product or service being offered, including all associated charges, and has explicitly informed the customer that the associated charges for the product or service will appear on the customer's telephone or electric bill;

(2) the customer has clearly and explicitly consented to obtain the product or service offered and to have the associated charges appear on the customer's telephone or electric bill and the consent has been verified as provided by Subsection (b);

(3) the service provider offering the product or service and any billing agent for the service provider:

(A) has provided the customer with a toll-free telephone number the customer may call and an address to which the customer may write to resolve any billing dispute and to answer questions; and

(B) has contracted with the billing utility to bill for products and services on the billing utility's bill as provided by Subsection (c); and

(4) the service provider, retail electric provider, or billing agent uses defined terms on the bill as required by commission rules adopted under Section 17.003.

(b) The customer consent required by Subsection (a)(2) must be verified by the service provider offering the product or service by authorization from the customer. A record of the customer consent, including verification, must be maintained by the service provider offering the product or service for a period of at least 24 months immediately after the consent and verification have been obtained. The method of obtaining customer consent and verification must include one or more of the following:

(1) written authorization from the customer;

(2) toll-free electronic authorization placed from the telephone number that is the subject of the product or service;

(3) oral authorization obtained by an independent third party; or

(4) any other method of authorization approved by the commission or the Federal Communications Commission.

(c) The contract required by Subsection (a)(3)(B) must include the service provider's name, business address, and business telephone number and shall be maintained by the billing utility for as long as the billing for the products and services continues and for the 24 months immediately following the permanent discontinuation of the billing.

(d) A service provider offering a product or service to be charged on a customer's telephone or electric bill and any billing agent for the service provider may not use any fraudulent, unfair, misleading, deceptive, or anticompetitive marketing practice to obtain customers, including the use of negative option marketing, sweepstakes, and contests.

(e) Unless verification is required by federal law or rules implementing federal law, Subsection (b) does not apply to customer-initiated transactions with a certificated telecommunications provider or an electric utility for which the service provider has the appropriate documentation.

(f) If a service provider is notified by a billing utility that a customer has reported to the billing utility that a charge made by the service provider is unauthorized, the service provider shall cease to charge the customer for the unauthorized product or service.

(g) This section does not apply to message telecommunications services charges that are initiated by dialing 1+, 0+, 0-, 1010XXX, or collect calls and charges for video services if the service provider has the necessary call detail record to establish the billing for the call or service.