FNB *****ing mistakenly transferred money not intended for the purpose it was meant to be.

On the 27th of November I mistakenly transferred money to my internal accounts. I have a Savings, Cheque and a Temp loan Legal account that has been handed over and a payment agreement has been made.

I transferred R1900 in two transfers of R950 each. I wanted to transfer it to my cheque account from my savings account but mistakenly transferred it to the Temp loan legal account. Ive been chatting to Agents on the app and phoned numerous FNB numbers and wasted over R100 in airtime with no results at coming to the correct person that can help me. I would like to reverse the two transfers as I did not mean to pay in into that account. I need that money as it is not mine.