If actual charges exceed the amount shown in the carrier's estimate, the carrier, upon request of the shipper or the shipper's representative, shall relinquish possession of the complete shipment at destination upon payment of the estimated amount plus 10% over the estimate or $25, whichever is greater. The carrier shall defer demand for the remainder of the tariff charges for 15 days following delivery.
52 Pa. Code § 31.123
The provisions of this §31.123 amended under the Public Utility Code, 66 Pa.C.S. § § 501, 1102, 1103, 1501, 1502, 1504, 1506, 1508 and Chapters 23 and 25.