FNB ***** unit does nothing, not interested

I made a payment for goods on Facebook marketplace. I was ****med and given a bogus address. I immediately reported the matter to FNB ***** department and reported it to SAPS. And sent my affidavit etc to FNB. I gave them the persons number, banking details etc. After waiting 3 weeks I get a call saying that there is nothing FNB can do and I must go back to SAPS. Surely they can track the person via their cell number and banking details. So as it stands I am over R7000 out of pocket and FNB who I have my bond, personal and business accounts with for over 20 years. This is shocking service. My personal banker is never available and never returns my calls and getting hold of my business banker is like a lottery. Extremely unimpressed