Any person affected by any legislative or administrative order of the Commission shall have the right at any time to apply to the Commission to repeal, amend, modify, or supplement the same. Such application shall be in writing and shall be heard as expeditiously as possible after notice of the hearing thereon shall have been given in the manner provided by Section 14 of this act.¹ An appeal shall lie to the Supreme Court from any order made by the Commission in any such proceedings or from the refusal of the Commission to make any order petitioned for therein, in the same manner and within the same time in which other appeals are authorized to be taken by the provisions of this act,² and, on any such appeal, the Supreme Court may affirm the order of the Commission, or the Commission's action in refusing to make the order petitioned for, or may itself make the order which the Commission should have made, or remand the cause to the Commission with directions to make such order as the Supreme Court may determine should have been made.