Caller: Someone claiming to be from "Commonwealth Bank's Cyber Security Team"

Suspect it is a scammer. They talked about a potential breach in my account. I told them I would call my local branch to check but they tried to insist it was a matter for the "Cyber Security Team" and my branch couldn't help. I asked them if they even knew my name since they apparently had access to see my information but they refused to answer citing a lot of nonsense. I hung up on them and checked with my bank online. No such attacks had been detected.