atm retained card

Tried to check my account balance at an at, after 2 failed attempts (due to a stupid faulty keypad), the atm swolled my card, i tried calling in but you wait for hours for someone to answer! Normally i would get a call from nedbank if they suspected any suspicious activity on card but nothing especially since my card was kept by the ATM. i have now blocked the card as im not even sure it was legit for the atm to keep my card. Please advise on the way forward. I dont see why i should pay for a new card, as it was not my negligence.