Bank taking from the poor

Money was sent through Cash send from my account I don't know how and it was also transferred from my revolving credit .I have my bank card with me.Whennibtried to log in my App today I could not ,it rejected my pin four times until I changed it.ans identify myself..How was the money taken since I did not do any sim swap or used my App.I called the ***** Centre and they were able to confirm that cash was sent from my account.How come all this happen when I have my phone and card.This is an inside job