You will see the the procedure you need as a Gap Credit Card Persons to access their account through internet, in which they can make online payments, reach customer services number easily. Note Gap Credit Card Have changed from Synchrony Bank due to Card Issuing partner.
Method of Access Account Online
Helpline Number-Make Payment by Phone
• The Gap credit card customer service phone number for payments and other
assistance is 866-584-3923.
Client Credit Card Physically payment address
Gap Credit Card
P.O. Box 13337
Philadelphia, PA 19101-3337