Money ****** via banking app

On Wednesday 27 July 2022 at 15:10 we received a call from a lady named Amanda Davids saying that she is working at CAPITEC HEADOFFICE and that there are some debit orders going off from our bank account that we don't know of. So she told us to go into the banking app and then all our money was gone. It was transferred to 5 different accounts. 2 accounts belonged to African Bank and the anther 3 accounts belonged to FNB. My question now is how do they see via your app how many money you have in all your accounts, that info is suppose to be confidential. I am very unhappy with this because I also now have to pay back an access facility that I didn't even use and the lady stole it. How can I be held liable for it if I didn't even transferred it or used it. This is unacceptable because it seems to me if anybody can access ones personal details as well as how much money you have in your bank account. Now I wonder how save is your money in the bank??