FNB - Useless and Unhelpful

I was a victim of ***** 14 March 2020. The con artist withdrew monies from my cc and chq account as my accounts were linked. I completed all the paperwork & submitted. After no response within a week I called the follow up ***** number which was provided on the automated email. The staff was super unhelpful and they made me repeat everything twice even though I submitted all the relevant paper work. they treated me like a ******** interrogating me & then they said they dont have access to the relevant paperwork. Which I find funny as they are the follow up ***** dept. It sounded like they were having a party in the office. Then I laid a complaint which was delt with in a timely manour & I was refunded. Then again on the 01/04 there was a debit order deducted from my chq account which was not auth by myself. I stopped it & was refunded. Then the amount was taken from my cc account on the 23/04. I laid another complaint. Today is 14 working days since me laying the complaint. I have only received feedback 1x that the matter is being investigated but I have followed up a few times since then & I am being ignored blatantly with no feedback or resolution. I dont know what to do anymore as I feel so hopeless and my accounts are not being protected by the Bank. I do not want to call the call centre ever again as they are so rude and unhelpful.