You must cancel your subscription on the PayPal website, if you paid by Paypal.
Here are the steps to cancel a subscription:
1. Log in to your PayPal Business or Premier account at www.paypal.com.
2. At the top of the page, click Activity.
3. From the Transaction drop-down menu, click Subscription agreements.
4. Use Search for transactions or any combination of the drop-down menus to locate a subscription.
5. Locate the subscription that you want to modify and click the subscription name. The Subscription details page opens.
6. Click the action button or link: Cancel.
7. Confirm or save changes.
The page is refreshed with a confirmation of the action taken.