I discovered this simple method in my day to day life doing day to day things. This tip is used to help out people who want to refund alot without getting rebilled, changing payment methods and it can even save you money up front.
Edit: This seems to not work for UK. The company is based in Sweden so it should work there and all other countries where the app isn't banned. Please let me know what countries do and don't work.
Happy Refunding
Thank you for the upvotes I'm trying to build a reputation