Section 4. Suit to challenge the liability to pay dues

(1) Where a notice of demand has been served on the consumer, or his authorized agent, under section 3, he may, if he denies his liability to pay the dues or any part thereof, and upon deposit thereof with the prescribed authority under protest in writing, institute a suit for the refund of the dues or part thereof so deposited. (2) The suit referred to in sub-section (1) may be instituted at any time within six months from the date of deposit with the prescribed authority in the Court having jurisdiction, but subject to the result of the suit the notice of demand shall be conclusive proof of the dues mentioned therein.