(a) Any insurer required to pay the contribution may file a claim for refund with the secretary at any time within two (2) years after the contribution has been paid. If the secretary shall determine that the contribution has been overpaid, the secretary shall make a refund with ten percent (10%) interest from the date of overpayment.
(b) Any insurer whose claim for refund has been denied may, within thirty (30) days from the date of the mailing by the secretary of the notice of the decision, request a hearing and the secretary shall, as soon as practicable, set a time and place for the hearing and shall notify the person.