Cognizant — not getting offer letter after getting selected in interview 2 months ago

I have attended the interview in Cognizant more than 1.5 months ago and successfully qualified in all the rounds. But I did't get any call or email after that regarding any further communications. Today I got a system generated email saying my application is on hold and no proper assurance on what's next.

I am unsure if they don't have any requirement then why to take interviews on every weekends for the same post again and again. Just to waste our time??