Fnb is a bank of *****ters

So last month my account was in negative cause apparently 2 swipes I made was not honoured now let’s be frank I would not swipe my card for over R500 and above of each purchase and I was told that the amount reserved but wasn’t bank which is a whole load of **** from fnb who are really just **** artist I want my money back in my account cause your are just robbing people and lying