U.S. Bancorp Credit Card Complaint

U.S. Bancorp Credit card department,

Credit determination Florida

I called my credit card company to add my husband on my - as an authorized user and not a co-owner. The credit card company refused because I would not give them his social security number. I offered any other find of proof and they still refused. I informed them that under The Fair Credit Reporting Act it was unlawful to deny my request. Their supervisor, - - - # - still refused. Can you help me?