To reject a Customer/Shipper login as a Carrier Administrator and go to Carrier Admin → Customers/Shippers.
In the New Customers/Shippers tab find the appropriate Customer/Shipper either using the Search box or navigating through the pages at the bottom of the table.
At the end of each row in the table is a column named Actions. Click the icon to reject the customer/shipper.
A window will pop up asking for a reason to be entered. This field is required and will not let you proceed without completing it. Click Reject once you confirm your reason and the customer/shipper will be updated immediately. If you change your mind simply click Cancel to go back to the customers/shippers page.