Cognizant Technology Solutions — cognizant - offer letter not released for interview on 16 dec, 2017 at sb road pune

Address: Pune, Maharashtra

I was interviewed on 16th dec, 2017 at sb road (Pune) for hadoop developer (Associate projects) role in cognizant.
I cleared all the rounds and including hr round. They made me fill a form with all my details on the same day.
Hr told me that with in 1 week i can expect the salary break up and once i accept it i will get the offer letter with in 2 weeks.
Its been months now and i have not received any offer from them.
I have been in touch with hr several times and been told that they are waiting for approvals.
Again i recieve a communication if i am ready to relocate to chennai which i responded positively. But it’s again a month and now hr stopped responding.

Kindly let me know sir what is the status of my offer letter.