According to this page, "Subscriptions renew automatically. Renewals are billed to your on-file payment method every month or year, based on the billing cycle you first selected." Maybe the remaining instructions on this page will apply to your situation:
Just checking in to make sure that you've seen our responses. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.
I appreciate the help, JT.