(a) A local exchange company shall print on the first page of each bill sent to a customer of the local exchange company the name of the customer's primary interexchange carrier if the company provides billing services for that carrier.
(b) The bill must contain instructions on how the customer can contact the commission if the customer believes that the named carrier is not the customer's primary interexchange carrier.
(c) The commission may, for good cause, waive the billing requirement prescribed by this section in exchanges served by local exchange companies serving not more than 31,000 access lines.