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
Helpline Number-Make Payment by Phone
• The Barclays credit card customer service phone number for payments and other
Credit Card Physically Payment Address
Barclays Card Services
P.O. Box 60517
City of Industry, CA 91716-0517