12. If any person refuses to pay any postage or other sum due from him under this Act in respect of any postal article, the sum so due may, on application made by an officer of the Post Office authorized in this behalf by the written order of the Postmaster General, be recovered for the use of the Post Office from the person so refusing, as if it were a fine imposed under this Act by any Magistrate having jurisdiction where that person may for the time being be resident; and the Postmaster General may further direct that any other postal article, not being on Bangladesh State service, addressed to that person shall be withheld from him until the sum so due is paid or recovered as aforesaid.