Pathetic service from standard bank

I was given a masterpass card from my employer and each time i try to use it at a checkers or a picnpay it asked for a cvc no and when i enter the cvc no it declines, while In checkers i held on for Half an hour, got transferred 4 times and knowone can help me with this card, yet my collegues can use their cards at checkers and picnpay knowone can assist me,