ATM *****

I was at the the ATM in Hillbrow at High Point i wanted to withdraw some money. When prompted to enter the card i did and at no point did i enter my pin. It took me to a that page for cardless services. When i tried to cancel so that i go back to the main page my card declined to get out of the ATM no matter how many times i tried to cancel. Minutes later i had to call to stop my card and was advised that money had been withdrawn from my account from an ABSA Atm. I need to know how this happened as i did not even enter my pin and need to know what action is going to be taken by the bank.