UPS audits the weight and dimensions of each shipment against what was originally provided on the shipping label. They use the greater of the actual weight of a package or the dimensional weight, a calculation based on the size of the package. Depending on the entered and audited dimensions either could have been used for the quoted rate and final rate. For more information please see this explanation from UPS.
The only data provided to us in these situations is what was provided as the audited weight or dimensions from the carrier and the resulting charges. Unfortunately, we are not able to dispute the charges or request additional information. Since UPS is able to audit packages in this way, their scales and measuring devices are federally regulated and are themselves audited to ensure accuracy.
While these situations are quite rare, we do make it a point to make sure that any affected orders are noted accordingly on your statement. When purchasing a shipping label, We always suggest that customers use tools such as scales and tape measures to ensure that the provided dimensions are accurate.
To learn about other additional UPS charges click here.