The Upromise MasterCard is issued in partnership with Barclays Bank, and you will interact with Barclays when it comes to making a payment online or by mail, or if you need customer service help. All the information you need to complete any of these tasks is below:
- If you want to make your Upromise credit card payment online, go here to log in and pay on your account.
If you’d like to pay your Upromise MasterCard bill by mail, send your payment to this address:
P.O. Box 13337
Philadelphia, PA 19101-3337
If you are having trouble making a payment or need other help, the Upromise credit card customer service phone number is 1-866-928-8598.