The commission may adopt and enforce rules to:(1) require certification or registration with the commission as a condition of doing business in this state, except that this requirement does not apply to municipally owned utilities;(2) amend certificates or registrations to reflect changed ownership and control;(3) establish rules for customer service and protection;(4) suspend or revoke certificates or registrations for repeated violations of this chapter or commission rules, except that the commission may not revoke a certificate of convenience and necessity of an electric utility except as provided by Section 37.059 or a certificate of convenience and necessity of a telecommunications utility except as provided by Section 54.008; and(5) order disconnection of a pay telephone service provider's pay telephones or revocation of certification or registration for repeated violations of this chapter or commission rules. Added by Acts 1999, 76th Leg., ch. 1579, Sec. 3, eff. Aug. 30, 1999.