13.—(1) Where a dispute is referred to the Director for determination under section 39(5) of the Act, the parties shall furnish to the Director or, if the Director so notifies the parties, to the consumers' committee to which the supplier is allocated or any sub-committee of that committee, such evidence in such form and at such time as he or the committee or sub-committee may reasonably require to enable him or it to determine the dispute.
(2) Where a dispute is determined by an order and the supplier fails to give effect to the order, the customer may set-off the amount in question against any charges that are owed by the customer to the supplier in relation to the supply to the customer.
(3) An order determining a dispute—
(i)may include a provision requiring the supplier or the customer to pay a sum in respect of the costs or expenses incurred by the person making the order; and
(ii)shall not (where the customer is more than one person) determine who is beneficially entitled to any payment required to be made by the order.