If your account is paid in full you have no installment plan, correct? So, which is it? 😀 If you have a refund/credit due, it’ll probably be applied to your Apple Cash balance.
You can contact GS support team for confirmation.
CONTACTING US — Goldman Sachs Bank
Except as explicitly set forth in this Agreement, you can contact us with questions or other matters about your Account by:
• Using Messages, chat with an Apple Card specialist.
• Calling us toll-free at 877-255-5923; or
• Writing to us at Lockbox 6112, P.O. Box 7247, Philadelphia, PA 19170-6112.
If you attempt to contact us by other means, we may not receive your message and may not be able to respond in a timely manner, or at all.