For Paypal payments:
Click the Profile next to “Log out” and select Profile and settings.
Click My Money.
Click Manage Automatic Payments in the “Automatic Payments” section.
Select the payment you’d like to cancel, then click Cancel.
A subscription can be cancelled up until the day before the next scheduled payment in order for you not to be charged.
Please refer to Paypal Support for up-to-date cancellations. Click Here