I need to change the credit card information that my account is billed to. I do not have a user account. I can not find a contact number to call.

Unfortunately, we do not have support over the phone. Do you have a link to a form that was created under the account username you are trying to access in order to update your credit card information?

https://www.jotform.com/help/330-How-to-change-my-Payment-Method