Periodically, you can experience difficulties logging into your Carter credit card account or you might not be qualified to make an online Carter credit card payment. In that case, you should get in touch with Carter's credit card customer service team for more assistance. The phone number for Carter's credit card is 1-877-563-5767. Hours: Sunday through Saturday, 800 a.m. to 900 p.m. EST. Comenity Capital Bank PO Box 183003 Columbus, Ohio 43218 3003 is where correspondence for carter's credit card paymentshould be sent.