wrong info given

i received a call from FNB credit card to upgrade my card to platinum, i asked the guy what s the catch he said i will save bank charges, few days later i noticed FNB charged me few hundreds to do the upgrade which was never communicated to me. i also asked the guy if my current credit card will still be active he said to me yes it will be active until i get a new one and activate it, to my surprise the platinum card which i still don't have is now loaded on my cards ( internet banking ) and i cant use my gold credit card anymore . FNB is making money out of people unnecessarily i don't see myself going far with them .this is more like *****ing form our pockets . when i raised the issue with FNB online complaint , all i saw was that the issue is being attended to , till today nothing happened .