R6000 charges in 1 Month

<p>I have a trading as business account and have swiped the card at a R5 tollgate, when sanral banked their transactions it amounted to maybe R10 or R15 on my account in whihc FNB charged me R150 in charges per transaction due to no funds in the account, this then resulted in R6000 in charges on my account for 1 month for an average of 10 to 15 swipes at the tollgate of R5 each. I requested on numerouse occasions for a detailed statement but go no response, I then made contact with call centre who explained the above to me, FNB is now sending me 'letter of demand' letters to which i am repolying asking what are my options and still no one is responding to me, this has been going on for over a month now. I have received SMS that my card has been cancelled and limits reduced etc... but still NO ONE has contacted me to assist me. this is absolutly disgusting that i can be charged R150 for a R5 transaction... legalised crime, I tell you</p>