One of the benefits of the Breaking Mars subscription is that it auto-renews, so you don't have to worry about your campaigns stopping.

In the event that you wish to cancel your subscription, all you need to do is click on the menu item button on the Breaking Mars website and then click on Billing from the pulldown menu.

Select Cancel Subscription

Once you are on the Billing page, you can click on the Cancel Subscription button to stop further charges from occurring.