FNB worst decision I ever made!

I opened an FNB account less than a month ago, it was such a struggle to begin with 3 visits later (35 min each) at the branch and I finally opened an account again that was less than a month ago! During this time I paid so much bank costs but that aside, 4/5 days ago I found out at a ATM that my bank account was frozen. (you wanna know where I was about to go? Checkers to try and buy my baby milk and diapers but with enough money too barely get anything) FNB didn’t even have the decency to let me know that it was frozen, they send me a message this afternoon Almost a week later!! So someone send me R500 for my rent cause Covid is making life extremely hard and work extremely rare, and then we called this LADY (I’m just gonna call her that) to tell her that we didn’t receive a payment notification or the money so she asked us for all account details. So we gave it to her, then she saw that the account name wasn’t the same as the persons name she originally send it too so she FORGOT to ask us what’s going on and clearly no common cense helped her so she reported me as ***** not knowing that she send money to my girlfriend who doesn’t have a bank account! We went to this “fantastic” branch again just to be told that the person who froze the account is the only one who can unfreeze it :( , we tried to transfer her R500 back but “THIS TRANSACTION COULDN'T BE COMPLETED DUE TO FROZEN ACCOUNT” and she blocked us in the only way we could contact her so please anyone, please tell me how to solve this issue, how can she be the only one that’s able to unfreeze my account but we can’t get ahold of her? Please can someone or FNB help me with this issue FAST??? As we need to pay rent and buy my baby milk and diapers... We will kindly return the LADY’s money we just need OUR money. So FNB if this wasn’t My last money I would’ve closed my account and NEVER thought of this horrible bank again.