Section 30
SEC. 30. The Commission may issue subpoenas and subpoenas duces tecum, for witnesses in any matter or inquiry pending before the Commission and require the production of all books, papers, tariffs, contracts, agreements, and all other documents, which the Commission may deem necessary in any proceeding. Such process snail be issued under the seal of the Commission, signed by one of the Commissioners or by the secretary, and may be served by any person of full age, or by registered mail. In case of disobedience to such subpoena, the Commission may invoke the aid of the Supreme Court, or of any Court of First Instance of the Philippines in requiring the attendance and testimony of witnesses and the production of books, papers, and documents under the provisions of this chapter, and the Supreme Court or any Court of First Instance of the Philippines within the jurisdiction of which such inquiry is carried on, may, in case of contumacy or refusal to obey a subpoena, issue to any public service subject to the provisions of this Act, or to any other person, an order requiring such public service or other person to appear before the Commission and produce books and papers if so ordered and give evidence touching the matter in question; and any failure to obey such order of the Court may be punished by such court as a contempt thereof. Any person who shall neglect or refuse to answer any lawful inquiry or produce before the Commission books, papers, tariffs, contracts, agreements, and documents or other things called for by said Commission, if in his power to do so, in obedience to the subpoena or lawful inquiry of the Commission, upon conviction thereof by a court of competent jurisdiction, shall be punished by a fine not exceeding five thousand pesos or by imprisonment not exceeding one year, or both, in the discretion of the court. The Commissioner and Deputy Commissioner, the chiefs of divisions, the attorneys of the Commission, and the deputy secretaries shall have the power to administer oaths in all matters under the jurisdiction of the Commission. Any person who shall testify falsely or make any false affidavit or oath before the Commission or before any of its members shall be guilty of perjury, and upon conviction thereof in a court of competent jurisdiction, shall be punished as provided by law. Witnesses appearing before the Commission in obedience to subpoena or subpoena duces tecum, shall be entitled to receive the same fees and mileage allowance as witnesses attending Courts of First Instance in civil cases. Any Person who shall obstruct the Commission or either of the Commissioners while engaged in the discharge of official duties, or who shall conduct himself in a rude, disrespectful or disorderly manner before the Commission or either of the Commissioners, while engaged in the discharge of official duties, or shall orally or in writing be disrespectful to, offend or insult either of the Commissioners on occasion or by reason of the performance of his official duties, upon conviction thereof by a court of competent jurisdiction, shall be punished for each offense by a fine not exceeding one thousand pesos, or by imprisonment not exceeding six months, or both, in the discretion of the Court.