Cognizant — offer letter not released even more than 1 month

Address: Bangalore, Karnataka

I was interviewed on 3rd feb 2018 at manyata tech park (Bangalore) for ui 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. Then again i got a call from hr and he got all the information about me. I got a mail regarding photo upload but after that no update.

Hr told me that with in 1 week i will get the offer letter.
Its been almost 2 months now and i have not received any reply from them.

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