§ 312. Refund credit on cancellation of credit related insurance or prepayment of contract. The provisions of this article requiring refunds and refund credits with respect to group credit life insurance, in cases of cancellation of group credit life insurance or of prepayment of a retail instalment contract shall also require refunds and refund credits with respect to credit unemployment insurance, group credit accident, group credit health or group credit accident and health insurance in cases of cancellation of such insurance or prepayment of a retail instalment contract which included such insurance.