Every rating organization and every insurer which makes its own rates shall provide within this state reasonable means whereby any person aggrieved by the application of its rating system may be heard, in person or by his authorized representative, on his written request to review the manner in which such rating system has been applied in connection with the insurance afforded him. If the rating organization or insurer fails to grant or reject such request within thirty days after it is made, the applicant may proceed in the same manner as if his application had been rejected.
SDCL 58-24-29