Cognizant Technology Solutions — Delay in Application process after document submission

Hi Team
I'm experienced professional having experience of 6.5 years.
I have given 2 rounds of technical interview on 31st March &1st April and on 2nd April was asked to submit the CIS along with other documents. I had submitted all the documents and waited for 4-5 days but no response from HR.

I was trying to reach HR but he didn't respond neither on phone nor over the email.

Luckily one day (10th April) he picked up the call and said business approval is pending and it will be done in 2-3 days, I'm still waiting and he is not responding at all.

It's not fair at all that all the day employee to call hr and hr keeps ignoring.

I was very much sure to get offer later according to feedback received during technical discussion. I'm still waiting for the update and looking forward for positive response.