Cognizant — offer letter not released for interview 7th july 2017

Address: Chennai, Tamil Nadu, 600015

I had interview in cts at chennai, varalakshmi tech park for oracle plsql developer on 7th july 2018.
And i got selected and had hr discussion on same day including salary and designation discussion. I was told i will get offer letter within 2 weeks. But it is almost a month now. I got only a confirmation mail saying that my application is under review on 11th of july.
After there are no mails. I tried dripping mails to hr and cognizant response team but there is no reply from them.

Cognizant team,

Please try to provide update to the selected candidates at least on weekly basis. It looks like all our efforts are going in vain.