220 karma · joined November 22, 2018
To open a dispute the transaction needs to be settled. After that Revolut or any other bank can give you the option to fill the form and start the dispute procedure where the seller can place their arguments against it.
After you submit a dispute the card issuer will review both arguments and make a decision (it depends on the bank). Most of the times when the seller doesn't submit evidence against the dispute you'll receive your money back.