If no plan, meeting the standards set forth in Kan. Stat. Ann. § 40-2111, and amendments thereto, is submitted to the commissioner within the period stated in any order disapproving an existing plan, the commissioner shall, if necessary to carry out the purpose of this section, and after hearing, prepare and promulgate a plan meeting such requirements. The commissioner may designate one or more rating organizations or other agencies to assist in the preparation, operation and promulgation of such a plan. If, after a hearing conducted in accordance with the provisions of the Kansas administrative procedure act, the commissioner finds that any activity or practice of any insurer or rating organization in connection with the operation of such plan or plans is unfair or unreasonable, or otherwise inconsistent with the provisions of this subsection, the commissioner may issue a written order specifying in what respects such activity or practice is unfair or unreasonable, or otherwise inconsistent with the provisions of this subsection, and requiring discontinuance of such activity or practice.