[Resolved]  Cognizant — offer letter not released. on hold

I had attended the cognizant interview at bagmane tech park on 9 feb 2019. I cleared all the rounds and also had hr round where they said i will receive my offer letter in 2 weeks.
But instead i get a mail saying it is on hold.
I am not given any contact details of any person whom i can contact.
Also neil from cognizant had called me, to inform that i need to fill cis form.
When i ask him about this, he says, you need to ask your primary hr. When i ask him who that is. He says he has no idea.
If cognizant does not want to hire people then why do they conduct interviews.