Have you tried the steps located on this page?
Yep. As I said, the support articles are out of date.
Hmmm - I think that may be because your subscription has been cancelled already, but I've escalated your post to a staff member so they can take a look promptly for you 🙂
Hey @Cyntech - is your subscription included with your Optus plan or did you purchase the subscription via the Apple App Store?
Thanks for confirming @Cyntech
Can you please shoot me a private message with the following info:
Are you the primary account holder: Y/N
Date of birth:
We should be able to manually remove the subscription from your plan.