How to Disable Order Refund Notification
Sometimes, you may need to allow your customers to return some products they purchased. It depends on your store policies that you may need to refund some orders. If you do, you’d better do it in the proper and professional way. You can decide whether you want to use the notification system to inform your clients or not. If you choose not to, then you can disable the Order refund notification.
https://avada.io/shopify/docs/how-disable-order-refund-notification.html