fraudulently retains or wilfully secretes, makes away with or detains a message or record of a message which ought to have been delivered to some other person or being required by an employee of the Corporation to deliver up any such message or record thereof neglects or refuses to do so;
(b)
except in accordance with this Act or unless authorised by the Corporation, wilfully retains or secretes or makes away with or keeps or detains or, when required by an employee of the Corporation, neglects or refuses to deliver up in the course of transmission by post any postal article or any mail bag containing any postal article; or
(c)
except in accordance with this Act or unless authorised by the Corporation, wilfully opens or causes to be opened any letter which ought to have been delivered, or does any act whereby the due delivery of a letter to any person is prevented or impeded,
shall be guilty of an offence and shall be liable on conviction to a fine not exceeding $5,000 or to imprisonment for a term not exceeding 3 years or to both.
(2) Nothing in subsection (1)(c) shall apply to a person who does any act to which that subsection applies where he is a parent, or in the position of a parent or guardian, of the person to whom the letter is addressed and the addressee is a minor or his ward.