Recalculation and refund

(1) If the Corporation determines that a Fund member has paid an initial contribution or annual premium in excess of the amount payable under section 18, the Corporation shall refund the Fund member the amount paid in excess. (2) If the Corporation determines that a Fund member has paid an initial contribution or annual premium that is less than the amount payable under section 18, the Corporation shall require the Fund member to pay the difference between the amount paid and the amount payable within the time directed by