(1) Rates, terms and conditions for telecommunications services offered pursuant to competitive classification must conform to all applicable laws, rules, and orders.

(a) The commission does not review or approve rates, terms and conditions of services offered pursuant to competitive classification.

(b) The commission will, when appropriate, investigate or complain against a rate, term or condition provided pursuant to competitive classification.

(c) If the commission determines that a rate, term or condition for service offered pursuant to competitive classification is ambiguous, there is a rebuttable presumption that the ambiguity should be construed in the favor of the customer unless the rate, term or condition was not proposed by the company.

(2) Following an inquiry or complaint from the public concerning rates, terms and conditions for competitive telecommunications services, a carrier shall specify where to obtain pertinent information, and how to contact the commission.

(3) The rates, charges, and prices of services classified as competitive under RCW 80.36.330 must cover the cost of providing the service. Costs must be determined using a long-run incremental cost analysis, including as part of the incremental cost, the price charged by the offering company to other telecommunications companies for any essential function used to provide the service, or any other commission-approved cost method.