Billing error is an error that results in incorrect billing charges to the responsible party. Billing errors may include incorrect meter reads, clerical errors by a City representative such as applying the wrong rate or an incorrect calculation, or failure of a building occupant to report a change of use in the building as required in section 3.807(2) that results in a utility under or over charge. Where a responsible party is overcharged as the result of a billing error, the City may render an adjusted bill for the amount of the error without interest, and shall issue a credit to the customer for the amount of the overcharge, without interest, in accordance with the procedures and limitations set forth below. Where a responsible party is undercharged as the result of a billing error, the City may render an adjusted bill for the amount of the error without interest, in accordance with the procedures and limitations set forth below.