can't terminate showtime subscription
I got automatic renewal for showtime and can't end it.
When I look at my account settings and see the subscription, it sends me to a page to sign up to i tunes. It then asks me to download latest version of itunes, with lates operating system which I don't want because of other software I have that won't work if I do that. How can I simply end this automatic subscription without having to make all these additional changes to my mac boo pro? thanks for any advice given.
MacBook Pro 13″, macOS 10.12