Is the card you’re using a department/company card? If so, you need to enter the FULL name on the card into the “FIRST NAME” section and then the DEPARTMENT/COMPANY name into the “LAST NAME” section. That should solve your problem.
Also please be sure you are entering the billing address for the card, not the department address.
If the credit card still does not process, please call 630-941-0900 and ask for Veronica.