FNB Victimised me, I won't keep quiet.

I am horrified by FNB's terrible treatment. My card was cloned, because of this, multiple swipes went through at tollgates in other provinces where I do not even stay, I went into the branch explained everything to FNB, who cut up my card and "supposedly" opened a case of ***** at the same time whilst "blocking" my card. The next minute, my account keeps on going further and further into arrears and FNB sends me legal notifications daily. I phone FNB ***** department and complained about them threatening me with legal action daily, upon which they said: "There is no ***** case which we are aware of, you are responsible for these charges". I have phoned customer services, Head Office, ***** Department, been to the branch, FNB does NOT believe me as a client. They are now threatening me with a Section 129 notice, and I will not budge, I REFUSE to pay for swipes I did not perform, if they cannot prove to me that I swiped those tollgates, why should I be liable for those expenses? We're talking R3000+ tollgates in one month in provinces around the country. My entire credit record with FNB is *****ed up, because of FNB, they put me in arrears, they caused all my debit orders to fail, they gave me a bad credit rating, purely because I refuse to pay for something I did not swipe. So FNB thinks it works as follows, they can randomly charge you, whatever they like, and if you stand on your rights, you get victimised and bul**** to the point where you move to another bank for your own safety, and then they keep on haunting you with legal notices and threats. NO MATTER HOW MANY TIMES I HAVE TRIED TO PROVE MY INNOCENCE, FNB DOES NOT BELIEVE ME AS A CUSTOMER!! Where are my rights? Is this right? Why should big corporations like this get away with victimising their supposed clients... "how can we help you..." What a **** cliche.