Money taken out of my account without my knowledge

On the 2nd of February 2021 money, R1100 disappeared from my Capitec bank account, ***, without my knowledge. When I went to enquire at the branch they informed who ever transferred in my account did a late recall and gave me an incident number ***7. They told me the guy claimed he was ****med while purchasing a phone, when in actual fact I just assisted with the payment as both he and I were Capitec account holders. He had actually purchased the phone from Sphelele Nkabini, a guy I have known since primary and upon purchasing the phone, he seemed very happy with from my point of view. I had given my childhood friend cash as I saw the money reflecting in my account. The wasn't very helpful when I asked for assistance, they acted like I was in the wrong when in fact, I was the only one at a loss here, the Capitec client in question has the phone he purchased in his possession and probably using as we speak, and the person who sold it to him, got money for it. I did ask Sphelele about this issue and he told me that the must have had second thoughts about the phone and probably didn't want to pay, he thought he could get the phone for free and unfortunately he had spent the money he got from selling the phone. I called the call centre and they told to open a case at the police station and make a detailed affidavit. I did go to the police but they said since I don't know who I am laying the complaint against, the Capitec client in question, the bank or my childhood friend, and I didn't really want to persue the matter ********ly, all I want is my money back, I should try to resolve the matter civily. I then proceeded to email the affidavit to Capitecs forensics department, but I haven't even received a phone call or e-mail back to let me know whats happening with this matter. I also called the Capitec client several times trying to resolve the matter but he always says he will call me back so we can meet up but he never does, one time we even agreed to meet at the police station once, so I could possibly reimburse him his money, he would return the phone to me and my money could be released by Capitec, but he never showed or even called. My biggest concern with this matter is that I don't want transactions, I don't understand or didn't authorise to affect my account, I have a lot of transactions that go through my account and I don't them to be affected by such transactions. I have been to the branch and didn't receive much help, I have attempted to make contact with Capitecs forensics but it seems they are nonexistent, I tried to Capitecs WhatsApp service but it seems like I keep straight into brick walls, even the Capitec client in question doesn't really care much about what happens because he didn't loose anything. I wish I could talk to Capitecs complaints department directly maybe they can shed some light on what really is happening