Please help pay back my money

I am so disappointed and so angry with Standard Bank

I have been needing help from them since August 2024. My refund from SARS was paid to my old standard bank account in 2024 July

Till today, Standard Bank still gives me a run around, they tell me at the branches (Greenacres & Boardwalk) they don't know how to assist because they can't locate my old account number. Their investigator confirmed with me that he was able to locate the funds to the Standard bank said account but regardless of the information from Standard bank investigator... The branch still couldn't help me. I even gave them a confirmation letter from SARS to prove the money was paid to that account. I feel helpless at this point

I have given up on my money, an entire R12K+ I've lost!