From a mail received just today (translating from Spanish):
¿Do you recognize that bad feeling when you pay someone and you later realize that you entered the wrong account data? We are going to solve it, allowing to our support team to revert wrong payments performed in Revolut accounts.
This changes will start on 12th August.
I promise I tried to get into the real Terms that will be applied since then, but has been quite impossible to get something clear from that. They’re also applying lower monthly limits with 0 fees (1000 EUR).