You have to cancel it.
Short version: Account / My Subscriptions / End Subscription
Go to your account (click on the Account button on the upper right of the screen).
Click on My Subscriptions
It will show things to which you are currently subscribed and options for other things to which you might want to subscribe.
Next to anything to which you are currently subscribed, there is an End Subscription button. Click it.
Answered at 01:58pm on November 24th, 2018 by barts185 (66 karma)