Cognizant — cognizant technology solutions offer letter not released yet

Address: 560100

Hi team,
I was interviewed on 18th nov 2018 at cv raman nagar (Bangalore) for dot net developer 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 and later they send a confirmation mail that i am selected and a link to fill some more details. But till now i have not heard anything from them and the hr is also not replying.
Hr told me that with in 1 week i can expect offer letter and once i accept it i will get the offer letter.
Its been 2 weeks now and i have not received any reply from them.

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

Name - monalisha behera
Mail id - [protected]@gmail.com
Contact - [protected]