Payments can be made in multiple ways. The easiest and most convenient way is to log in to your account and make a payment with a checking or savings account or debit card (no credit cards are allowed). For even more convenience, you can set up recurring payments online so that your payments are made automatically using a checking or saving account. You can also use bill pay through your bank's online bill pay service. (Make sure they don't charge a fee!) Payments can also be sent via mail to Castle Credit Co Holdings, LLC PO BOX 845073, Dallas, TX 75284-5073 or made by calling Castle Credit Co Holdings, LLC at (833) 353-0549.