Still no response from FNB after 3 Hellopeter complaints

Its almost a month since I started requesting response from FNB and till this day I haven't received positive feedback. Calling or chat system are dysfunctional because the agents make it your problem like your complaint has no merit. Where they accept that there is merit they lodge an investigation which is not recorded and no one can follow-up. On 18 Oct 2022 I made a payment of R120 to a Dr provider and had a balance of R10073, The next day I had a balance of R9009 on my credit card. After calling the bank and using the chat option on the APP, I was informed that I must wait for the system to close which was going to be on 07 Nov 2022 so that I can download my statement and do my own recon. I did this and called the bank yet again on 09 Nov and spoke to Jabulisile who confirmed that indeed there was a difference of R83 which cannot be accounted for and she promised to lodge investigation for me. She only sent me a call reference number which asked me about how she resolved my problem. I gave good ratings thinking that we are making progress. Today, 16 Nov I called again to make follow up. I called twice because the first call didn't take me anywhere. The second call I spoke to a chap named Thendo. He informed me that my problem was resolved on 29 Oct 2022 and the agent who resolved it will call me by end of business today. It is after 17:00 and no call has come through and I still don't know what happened to the money. This is so frustrating. How can I trust a bank where money just disappears and the bank does nothing to resolve this challenge? I spend a lot of time writing these reviews on Hellopeter. The only thing fnb will do is quickly send me an email to avoid bad reviews and thereafter I will not hear from them. What useless customer service they have. It's my money, I want it back.