You can find details about your account in the Adjustments section on the first page of your bill, which serves as a table of contents. It refers you to the specific page that details your billing adjustments (such as shipping charge corrections) and other charges.
Shippers are responsible for providing accurate and complete shipment information on the shipping document or in the automated processing system used, including service selected, number, weight, and dimensions of packages. UPS reserves the right to audit any package and/or invoice to verify service selection, package dimensions or weight, and applicability of any charges. As part of that audit, UPS may weigh and measure any package tendered to UPS using any method UPS deems appropriate including, but not limited to, multidimensional measuring devices. If any aspect of the shipment information provided by the shipper is incomplete or incorrect as determined by UPS in its sole discretion, UPS may adjust charges at any time.
Refer to the UPS Tariff/Terms and Conditions for more information about applicable rates, charges, and billing adjustments.