Any person who contravenes or fails to comply with any of the provisions contained in regulations 3 to 10, shall be guilty of an offence and liable upon conviction to a fine or to imprisonment for a period not exceeding twelve months and, in the case of a continuous offence, to an additional fine of two hundred rands or additional imprisonment of one day for each day which the offence continues: Provided that the period of such additional imprisonment shall not exceed ninety days.