Poor advisory (services delivery ) by standard consultant contact center

I was owing standard bank credit ,so on my monthly statement were both finance charges and cash finance charges,i decided call to standard to ask why they are charging both ,they says is because i did cash withdrawal and online transaction with credit card ,they said only way to get rid (away) with this cash finance charges,is by settling my outstanding balance which i did,to my surprise standard still charging me cash finance charges, i did to call standard bank to ask why are they continuing charging me cash finance charges ,and consultant said as long as i have account with them they will charge even thought i don't owe standard bank a cent. standard consultant they don't they are work