Poor Service/Bad Attitude

On the 7th of July I was trying to withdraw cash from an ATM at IRENE Mall. The Atm was not working so I decided to go to PNP IRENE Mall to make a withdrawl after swiping my card for 5 times without any success I then told the cashier to stop swiping my card I will try and withdraw cash at another store. On my way out I decided to go to the Atm and try once more to withdraw cash. I discovered that my balance was less with R1500 I then went back to the store to tell them that there's been a withdrawal in my account . I even received a notification to say a transaction was successful. The cashier told me that it happens all the time. The supervisor advised me to go to my branch and ask them to reverse the transaction. I did that on the 8th of July. I was told that I would get feedback within 7 working days. I'Ve been waiting since. So today I decided to go to the branch to find out what's going on. The branch manager told me that since I was withdrawing from PNP, FNB has nothing to do with this. I need to go to the police station and open a case. I mean really? I Bank with FNB not PNP surely there's an agreement between the 2 parties on how to deal with such matters without involving