Yeah as sibling points out, lots of orgs have scammy official security calls. This leads to a dance I have been through quite often.
<phone rings, I pick up> Hello
Them: Am I speaking to Sean Hunter
Me: Yes
Them: This is <rubbish bank who should know better>. Can you confirm your <date of birth/full address with postcode>
Me: Yes
Them: Err, … sorry I didn’t quite catch that.
Me: Yes.
Them: <thoroughly confused>I asked whether you can confirm your <date of birth/full address with postcode>
Me: Yes. I can.
Them: err… I can’t talk to you without you passing security.
Me: You called me.
Them: I’m sorry…?
Me: You called me. You wanting to talk to me about something is your problem.
Them: I need you to pass security before I can talk to you.
Me: OK, well. Have a nice day. <hang up>
Almost this exact thing has happened multiple times with one of my bank accounts which I can’t completely shut because of boring reasons but I have basically deprecated because they do this sort of nonsense. My main bank now is much better.