The Director General or the licensing authority may by an order in writing cancel any licence granted under these rules if,-

(a) the licence has been obtained by fraud, suppression of facts or misrepresentation; or

(b) the licensee has committed a breach of any of the conditions of the licence; or

(c) the licensee has tampered with the licence in any manner; or

(d) the licensee has contravened any law relating to customs or foreign exchange or the rules and regulations relating thereto.