[Blackyi22]

Revolut will always charge you back if you cancel the payment and the vendor redeems it. If instead you don't have funds anymore once the payment is redeemed by the vendor, your account will go in a negative balance.

They let you cancel the transaction, just to give you the funds back faster in case you already canceled the order and know that the payment won't be redeemed.

Yeah! That's why if the vendor redeems the credit you just canceled you have to write to the support and follow second part