FNB system error reversed valid deposit - money not being returned as promised

Good Day

I have previously logged several tickets with FNB via your website and the email addresses care and ********** about the R2672.40 that was reversed by FNB on 05 January as a "unpaid cheque" - but I have never ever had a cheque paid into my account and the payment that was returned as unpaid was in fact a EFT PAYMENT. Somebody from FNB called last week and said they will close the complaint and sort it out, but nothing has happened. I am now seeing this as theft and ***** and will take action accordingly by logging a case at SAPS COMMERCIAL CRIMES for investigation of this missing money from my FNB (FIRST NATIONAL BANK) savings account.