Hi @Philou,
Welcome to the Roku Community!
Thanks for posting and we understand that you want to know how to request a refund.
For any Roku Pay inquiries, it may be more effective for you to get help from our billing team. Don't hesitate to get in touch with them directly through our Account-Billing Support page. Choose the options for "Account, payments & subscriptions" and they are the best ones to help you with that matter.
If you have any other questions or concerns, please let us know.
Best regards,
Mary
Mary F.
Roku Community Moderator