Standard Bank Customer Service is 0/10

So i incorrectly made a payment to a standard bank account holder, for the amount of R13500. I contacted Standard Bank, and they just flat out refuse to assist in the matter. I do not have contact details of the recipient. I contacted Standard Bank to ask help in them contacting their client to verify if the payment was received, and if they intended to receive that specific Payment, but simply put, Standard Bank Claims they can't assist