was this you or was it a conn.

Received a call, teucalled flagged as spam. But it says standard bank so answer anyway. Person: Is this is mr X. Me: No that no my surname ( its my wife's ****en name.) Person: Sorry mistake Person: Can I please verify all your details. Me: I'm not going to fill in the blanks. There was a huge data breech a few months ago and I don't trust anyone calling me. Me: however tell what its about and I can see what we can do. Person: no you mush go into the bank and ask them. Me: ask them what Person: I cant tell you. Me: well then I'm not going to go am I? Person: ok bye.

So was this a legit call or not Whats the state secret about.