****** money from internet banking without joy from Absa

Money through internet banking was ****** on 24 July during the night from my account. When I reported it the next morning to my branch the teller recognized the account it was deposited in and said that the same happened to another client the previous day to the same account. It is now 39 working days later and nobody from Absa even contacted me. When I enquire they say they are still busy and yesterday they said the case is closed. What does closed even mean? My money is no longer safe with Absa and I will have to find another bank who will be more than willing to accept my business. Is this ***** or theft from Absa's side? What do I do to get back my money??