Cognizant — offer letter not received for 17th feb hr interview @hyderabad

I attended hr round on 17th feb at mindspace hyderabad cognizant campus. I am mainframe resource and along with me around 50 + people attended that day for interview. They have discussed & confirmed the salary package and told that i will get a call within a week. Its almost 3 months but still no response from the recruiter on the same even after sending mail 4-5 times.
Now i really lost hope to get the offer letter.

Really appreciate if i get any update on my profile.

Receuiter (Got hr interview details) : vivin vincent
My name: subharanjan das
Skill : mainframe
Email : [protected]@gmail.com