HORRIBLE SERVICE NO REGARD FOR THEIR CUSTOMERS

This is my 2nd attempt at this as my previous complaint was not resolved on this platform, I do not know what else to do as I am clearly fighting a losing battling with FNB as my bank. Sad part is that my query involves money that disappeared from my account without a trace. As frustrated and disappointed as I am I cannot afford to lose R2500 from my account and keep quiet or just walk away as if nothing happened, I need answers and solutions that you might find if you do a bit of work. Someone that did reach to me via email from FNB asked that i fill in a debit card dispute form and upon checking the form none of the option stated on the form were relevant to my case as I did not physically use my card or made any transaction from account. So i responded back to Limpho Litau from FNB that I an unable to choose any options stated as it didn’t happen to me and asked what is another solution, there was no reply. my account was showing a particular balance before I went to bed on the 6th Aug and when I checked on the 8th August it was showing an entirely different balance and there was no way I would transact R2500 and not know or remember and no trace of where the money went and when I printed statement of account there is no sign as to what happened, amounts are just off, when I am counting back and I can’t account for R2500.I went to FNB bank branch and discussed this with them they also saw this on the bank statement and agreed something is not making sense but couldn’t say what happened to the money, I was told they were going to investigate and get back to me, till this day I have not heard from them. Strangest thing is that I pointed to them available balance has been reflecting a rather huge amount than normal and not showing who transaction is/was paid to especially for R2500 and they asked me to wait till it clears then it will reflect, till this day all other transactions have cleared and are showing merchants and respective amounts except for that -R2500 this is showing on my detailed balance till this day.

Are you saying to me this is hard to investigate and track back the source? Should I be figuring this out myself, yet my funds are supposedly safely secured with you and when I ask questions, I do not get responses. Can I please get some proper assistance in this place please. I am an elderly person and should not being through so much stress with a bank that is not concerned about my well being.