Any person who contravenes or fails to comply with any of the provisions of regulations 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17(1), 17(2), 17(5), 17(6), 17(7), 18, 19(4), 19(5), 20(4) and 20(5) shall be guilty of an offence and liable upon conviction to a fine or to imprisonment for a maximum of 12 months and, in case of a continuous offence, to an additional fine not exceeding R200,00 or to additional imprisonment of one day for each day on which the offence continues: provided that the period of such additional imprisonment shall not exceed 90 days.