Cognizant Technology Solutions — Offer Letter not released despite clearing all interview rounds

I have passed all the interview rounds at Cognizant and have had my salary discussions with the HR as well. I was told that I would receive my offer letter by Monday, 30th August, 2021. However I am yet to receive the same .

Just for your information, I had given my interviews on 7th, 11th and 16th of August, 2021 and have cleared all the rounds. Also, I had submitted my CIS form on 20th August, 2021

Could you please let me know when I will receive the offer letter? Also kindly let me know if any action is required from my side.

The concerned HR from Cognizant is Shivangi Swain (Shivangi.[protected]@cognizant.com) and Subrat Dash (Subrat.[protected]@cognizant.com). I have tried reaching out to them but they are not picking up my calls.

The email id associated with my application is sdg.[protected]@gmail.com