If the commission shall find that the corporation may reasonably be expected to make changes in its service, which will render such service reasonably adequate, and shall specify such reasonable changes, and shall fix a time within which changes may be made, then the order of the commission shall be to such extent. If such changes are not made within the time fixed by the commission, the commission shall have authority to forfeit the charter of such corporation, upon five (5) days notice, and a hearing accorded upon the forfeiture. If the commission shall find that the corporation cannot reasonably be expected to make the necessary changes in its service which will render such service reasonably adequate, for reasons stated in the order, then the commission shall have the authority at such time to enter an order forfeiting the corporate charter of such corporation.