I'm trying to sort out an issue, previous flatmates claim that they didn't receive my rent (I was there for a very short time) - I sent through the supporting statement + a screenshot of the account I paid into and forwarded the account number they told me to pay into - all match.

But, they got the account number wrong in the email which means my payment went into thin air, since I've paid it into the account I was asked to I know it's not my fault but what actually happens when you pay into the wrong account? And what can be done to get the money back?