A telecommunications utility may promote the use of its services by offering a waiver of part or all of a recurring or a nonrecurring charge, a redemption coupon or a premium with the purchase of a service. ORS § 759.260 and 759.265 do not apply to promotions under this section, but the customer group to which the promotion is available must be based on reasonable distinctions among customers. [1993 c.204 § 4]