Got a call from UK Visas and Immigration

I got a call from 0300 123 7000 number, they said they are from UK visa and Immigration, and asked me that do I have some visa issue in UK, I violated some rules?

They they started asking about my personal information

They they asked the name of my wife, I said the wrong name because I don't believe that was a legit call

So they told me why am I lying

I said because I don't believe it's a legit call

Then he said okay if you don't believe let me tell you all about yourself

They he said I came here in 2021, and did my bachelor and Masters in UK

But I have never done masters in UK.

Then they said I work in Pfizer

That's the certificate I have from Pfizer via Forage virtual program which I had put on my resume and submitted for an online Job but I have never worked in Pfizer.

What is the case, is it a legit call? Number shows right and says UK visas and Immigration on Truecaller.