For Paypal:
- Log in to your PayPal account.
- Click Profile near the top of the page.
- Click My money.
- Click Update in the My preapproved payments section.
- Click Cancel, Cancel automatic billing, or Cancel subscription and follow the instructions.
Please refer to this link: https://www.paypal.com/us/webapps/helpcenter/helphub/article/?articleID=FAQ2327