²[45AA. Appellate authority.--¹ [If an employer is not satisfied with the order referred to in section 45A, he may prefer an appeal to an appellate authority as may be provided by regulation, within sixty days of the date of such order after depositing twenty-five per cent. of the contribution so ordered or the contribution as per his own calculation, whichever is higher, with the Corporation:
     Provided that if the employer finally succeeds in the appeal, the Corporation shall refund such deposit to the employer together with such interest as may be specified in the regulation.]