Wire payments are definitely reversible, but you might need to involve the courts, and international wires are more complex [0]. Most notably, 900 million in accidental payments made by Citi were eventually fully reversed by appeals courts.

> A full recounting of it is outside the scope of this anecdote, but it rhymes with “If you and the United States federal government disagree whether a transaction is final, you are wrong.”

[0]: https://www.bitsaboutmoney.com/archive/no-payments-are-final...