Terrible Low Service

I am so dissappointed at FNB for the level of Service I received recently. I had an unauthorised debit card purchase from my account on the 27th September 2022. I went to the branch to fill out the required form and attached the evidence they needed. But all I am getting is different consultants asking me to send the same thing over and over. I logged an official Complaint, FNB still has not gotten back to me after 72 hours. I feel like they can't help me. I am stuck.