In the event of violation of any city franchise provision, or the provisions of this act, by any duly franchised person or entity furnishing cable television service, the municipality having granted such franchise, before taking any action to declare a forfeiture, shall serve written notice of such violation upon the franchise holder with directions to correct such violation or show cause why such violation should not be corrected at a public hearing held not less than thirty (30) days from the date of service of such written notice. Continued violation of any city franchise provision of this act may be enjoined by the district court. Any person, firm or corporation acting in its own behalf or under a lease with or pole contract from any public utility which attempts to or does construct, install, operate or maintain a cable television service in, on, over, under, upon, across, from or along the streets, alleys, sidewalks, public property and public ways within the corporate limits of any city without possessing a valid franchise from such city involved as authorized by this act shall be guilty of a class C misdemeanor. Each day such act continues shall constitute a separate offense.