Trying to get money erroneously deposited reversed from FNB is a frikkin nightmare

My daughter sent me money (R700) on the 30th October and unfortunately sent it to the wrong account. I am not using my FNB Account at present, as I am under debt review and my account is in a negative balance. She asked them to please reverse this amount and they want to charge her over R300 to do so. FIFTY PERCENT of the amount she erroneously deposited will just be taken off her account (for pushing a few buttons on their computer). Then I presume they will charge me as well for reversing the amount. This money has not been used. I then asked them to just release the R700 so I can send it back to her (she is also a FNB client) and that went on deaf ears). So now I ask FNB do I go to the Ombudsman for unfair charges or can I ask you to please either allow me to send the money back to her or FNB reverse the fees back into her account.