Refund
You can contact a retailer for a refund over the phone or in person if they provide it. Most online services have a form for requesting a refund. Forms are usually simple and only demand you to fill in a few details, such as your name, phone number, and email address, as well as the reason for your refund request.
Chargeback
The fee will be paid back to the issuing bank if the buyer contacts the seller but does not obtain a response or the seller refuses to offer a chargeback.