Cognizant Technology Solutions — No update after confirming my primary email address

I have attended interview on April 30 2022 and submitted all require document for HR discussion with candidate information sheet on 9th May 2022 after that I didn't get any response.

Recently i.e. 6th June 2022, I got a call from HR department and asked me to acknowledge my primary email address for offer release as my profile associated with three email address in their database. Again no response till now.

Now I'm not sure whether that call is from Cognizant.