Add Cancellation Policy At Checkout
The first way to inform users of your cancellation policy is to set a cancellation policy as part of your payment settings. This method will require a customer check the "accept terms" box which will include your cancellation policy. This method is good if you need extra reassurance that a customer accepts your cancellation policy. For information about how to create a cancellation policy navigate to Settings > Payment Info or see the help document titled Creating a Cancellation Policy.
The cancellation policy will also be included in the customers confirmation emails.