Section 460.1617. Billing errors.

(1) If a customer has been overcharged, then the utility shall refund or credit the amount of the paid overcharge to the customer. Overcharges shall be credited to customers with 7% interest, commencing on the  60th   day following payment. A utility is not required to adjust, refund, or credit an overcharge beyond the 3-year period  immediately  preceding discovery of the billing error, unless the customer is able to present a record establishing an earlier date of occurrence or commencement  of the error.

(2)   In cases of unauthorized use of utility service the customer may be back billed for the amount of the undercharge. The back bill may include interest at the same 7% interest rate applied to overcharges.

(3)   In cases not involving unauthorized use  of  utility  service,  the customer may be back billed for the amount of the undercharge during the 12-month period immediately preceding discovery of the error. The utility shall offer the customer at least the same number of months for repayment equal to the time of the error. The back bill shall not include interest.

History: 2008 AACS.