In the US, bank transfers are reversible? (Here in Germany, if you sent the money it's basically gone, you can only reverse payments that the other side "pulled" from your account) Always interesting how the types of service available and their rules shape what's used where.
Bank: "Why?"
Tenant: "Well my landlord [tale of woe]."
Bank: "So I'm hearing that the payment was unauthorized."
Tenant: "Yes!"
Bank: "Reversed."
Landlord: "... YOU DID WHAT?!"
Bank: "sigh We don't want to be in this discussion."
Landlord: "YOU HAD ONE JOB!"
Bank: "It's not sitting between two adults trying to figure which of them screwed the other. We've got courts for that. Good luck."