Mont. Code Ann. § 80-4-534

Upon cancellation of any policy of insurance required by 80-4-502 and 80-4-506, the insurance company involved shall give 30 days' advance notice to the department by certified mail, return receipt requested, of cancellation of the policy. If the policy is canceled, the department shall immediately suspend the license of such uninsured warehouse operator without a hearing, pursuant to the Montana Administrative Procedure Act. The suspension may not be removed until satisfactory evidence of the existence of an effective policy of insurance complying with the requirements of 80-4-502 and 80-4-506 has been submitted to the department or until further order by the department or a court of competent jurisdiction.