Poor customer service experience

I have never witnessed such a very poor customer service. I refer to ABSA: Everyday Banking Legal & OBS (Cheque & Loans).

Three weeks ago, I went to the nearby ABSA branch to ask for an assistance in making sure I get my money back which the account had been receiving from SARS. This account has been dormant (i.e. account no longer in use). I have learned there has been money transfer into account.

In an attempt to have refund, I logged the issue with ABSA: Everyday Banking Legal & OBS (Cheque & Loans), which I believe is their recoveries department to assist with paying me back my money. They requested that I furnish a proof of banking details, that they needed to pay my money. All of that was done, in approximately 3 weeks back, and was told that the money will take 3-5days reflect into my account. Till today, no money, no communication to advise on what is going on.

This has left me being frustrated, because there's movement in solving my issue. I'm fed up now, in terms of following up because nothing is getting done. No feedback whatsoever. I have run out of patience and options to use.

Please assist. I have all the proof of communications with them, and I can provide necessary documentation as a portfolio of evidence.