(a) No person shall wilfully collect any sum as premium for insurance, which insurance is not then provided or is not in due course to be provided by an insurance policy issued by an insurer as authorized by this title.
(b) No person shall wilfully collect as premium for insurance any sum in excess of the amount actually expended or in due course is to be expended for insurance applicable to the subject on account of which the premium was collected.
(c) No person shall wilfully or knowingly fail to return to the person entitled thereto within a reasonable length of time any sum collected as premium for insurance in excess of the amount actually expended for insurance applicable to the subject on account of which the premium was collected.
(d) Each violation of this section which does not amount to a felony shall constitute a misdemeanor.