(1) The Board shall have jurisdiction to--
         (a) adjudicate upon and decide any dispute or matter arising amongst entities or between an entity and any other person on issues relating to refining, processing, storage, transportation, distribution, marketing and sale of petroleum, petroleum products and natural gas according to the provisions of Chapter V, unless the parties have agreed for arbitration;
         (b) receive any complaint from any person and conduct any inquiry and investigation connected with the activities relating to petroleum, petroleum products and natural gas on contravention of--
             (i) retail service obligations;
             (ii) marketing service obligations;
             (iii) display of retail price at retail outlets;
             (iv) terms and conditions subject to which a pipeline has been declared as common carrier or contract carrier or access for other entities was allowed to a city or local natural gas distribution network, or authorisation has been granted to an entity for laying, building, expanding or operating a pipeline as common carrier or contract carrier or authorisation has been granted to an entity for laying, building, expanding or operating a city or local natural gas distribution network;
             (v) any other provision of this Act or the rules or the regulations or orders made thereunder.
     (2) While deciding a complaint under sub-section (1), the Board may pass such orders and issue such directions as it deems fit or refer the matter for investigation according to the provisions of Chapter V.