Charged for card services for no reason

I have a prestige plus account with Standard bank. Credit card annual fees were to be free of charge with this type of account.For the past 2 months I have been billed R31 a month for no reason.Called the hot line 2 months ago only to be told it was a system error. afreed to reverse the charges. Up until today it was not.called them again today oly to be told system error will reverse.it seems to be an ongoing thing.HOW MANY MORE PEOPLE OUT THERE ARE CHARGED UNKNOWINGLY. Blue bean gold the same applies,was charged for some months for a garage card which I did not have.they also changed their policy from annual card fees to monthly. Used to be around R 220 a year now R31 a month totaling R 372.a year. I had a credit of R100 for a whole year in that account, but still had to pay a penalty fee of R 142. Postal problems ,I don't remember I must pay them once a year.just keep the card for emergencies .how many more people are paying for garage cards they don't have. Did this to my wife as well,got the proof.surely a mail could have been sent out of this error.even the stand in for the prestige banker at umhlanga was unsure. Can I really trust these statements any longer.