An incumbent local exchange company may not:
(1) delay providing or maintaining a service provided under this subchapter;
(2) degrade the quality of access the company provides to another provider;
(3) impair the speed, quality, or efficiency of a line used by another provider;
(4) fail to fully disclose in a timely manner after a request all available information necessary for a certificate holder to provide resale services; or
(5) refuse to take a reasonable action to allow a certificate holder efficient access to the company's ordering, billing, or repair management system.