Incompetence and thievery should be FNB's slogan

I am really getting to reach my limit with FNB. Last month I had the issue with my business account being overcharged for account fee. No it's the same issue with another account. How do you guys manage to stay in business with this level of incompetence. Its a simple calculation for an increase in VAT, did no one in FNB take math in grade 3? If my service fee was R75 incl 14% VAT, it should only be R75,66 incl 15% VAT. Use a calculator and if you can't then maybe consider a business in breaking rocks.