If a freight collect shipment is refused due to damage who is responsible for the cost of the freight?

all info can be found in the national motor freight classification guide. if a freight collect shipment is refused the shipper is responsible for the charges. the shipment will move back to the shipper freight collect with the original charges added to the shipment. however if the shipper does not want the freight back and the consignee has paid for the freight the freight company can try and collect from the consignee. unless the shipment is damaged and then the freight company should allow the freight to be sent back with no charges and the company can then file a claim for the product and freight charges.
The official definition of freight is "goods transported by truck, train, ship, or aircraft."