Refunds and deficiency billings.

69-09-02-13. Refunds and deficiency billings. Application for refund of any payment to a utility claimed to be in excess of established rates schedules, or rules and regulations pertaining thereto, shall be made within six years from the date of payment. A utility may not retroactively bill a customer a deficiency charge for service rendered more than six years prior to the date of the bill. General Authority: NDCC 49-02-11 Law Implemented: NDCC 49-02-11