You will see the the procedure you need as a Barclays Bank credit card Person to access their account through internet, in which they can make online payments, reach customer services number for further assistance.
Method of Access Account Online
• Sign in to make online transactions and account management.
Helpline Number-Make Payment by Phone
• The Barclays credit card customer service phone number for payments and other
assistance: 1-877-523-0478.
Credit Card Physically Payment Address
Barclays Card Services
P.O. Box 60517
City of Industry, CA 91716-0517
