S. Bune Cheque account dispute March 2024

Good day, My name is Sivuyile Bune, I am a client who holds a cheque account wit FNB for more than 15 years now. In this period i have maintained a reasonably decent status in terms of financial management, despite the financial challenges that everyone endures. I receive my salary on the 24th of every month and always make efforts to have sufficient funds for the entire month to support my family, since i am the bread winner. A few weeks ago (end of March 2024) FNB made deductions which do not fall within our monthly arrangement without communication, this has seriously negatively affected the survival of my family as my account is in the negative (R -1,950.74), and even though i utilized my account for 2 days and haven't done anything since March 2024. I initially went to Amalinda FNB branch for assistance without any success, I, then tried to get hold of my Banker ''Debra O'Connell at ***'' for the past 3 weeks without getting through, the machine answers the call and prompts you to wait.. I have waited for hours and in the process exhausted all my monthly call minutes with no success. I am now stranded as i am unable to put fuel in my vehicle and the power in my house will be exhausted tonight. I am desperately i need of help as i have tried everything in my capacity. This is something i have never experienced before which has made me to lose faith in FNB as my banker of more than 2 decades. I am also worried that this have a negative impact on my credit score. Please help.