Pathetic service

I have gotten a petrol card on my banking profile since last year, but for some reason fnb doesnt debit my account at the same time as going through the toll gate, now my account is in a minus amount effecting my credit profile and on top of that they debit R45 for each toll not paid on time but yet it this my fault NO because if they debited same time i wouldnt be in this mess, whats worse is when i speak to an agent they keap transfering me because they cant handle the fact they messed up and nobody wants to take accountability for they actions. You guys are ***** you have left my acount the way it is because if you fix it you wont be able to charge me R45 unpaid fees for each transaction and thats thousands if you add it all up over 7months. I cant even take out a loan anymore because you keep doing this to my account and nobody can give provide me a valid answer as too why you cant fix it. I THINK I MUST GO TO A NEW BANK FOR MY BANKING