Can I change the payment due date on my Mastercard credit card? No. Your due date is not able to be changed. Have more questions? Submit a request 0 Comments Article is closed for comments. Related articles How do I pay a 3Rivers loan/credit card/mortgage/line of credit? How to set the PIN on your Mastercard. Credit Card Mailing Address Toll Free 800-825-3641 Local 260-490-8328 How much cash can I withdraw in a day at an ATM?