Within thirty days after the filing of any group property insurance authorized by credit card insurance policy, certificate of insurance, notice of proposed insurance, application for insurance, endorsement or rider, the director shall disapprove any such form if the premium rates charged or to be charged are excessive in relation to benefits, or if such form contains provisions which are unjust, unfair, inequitable, misleading, deceptive, or encourage misrepresentation of the insurance, or are contrary to any provision of this title. If such filing is not disapproved by the director within this thirty-day period, it shall be deemed approved.
SDCL 58-19-50