Cognizant — offer letter not released-2019

Address: 11/15/A, NABAPALLY, NEWBARRACKPUR, 24PARGANAS(NORTH), Kolkata, West Bengal, 700131

I attended an interview at CTS Kolkata on July 6th 2019 and cleared all the rounds. At the end HR informed me that I will receive my offer letter between two weeks. But I haven't received yet. I am still communication with HR over phone but he told me that it's pending for some approvals and everything not in his hand once he will get update then he will inform me. But it's almost over 2 months. So I am totally confused that whether I will get my offer letter or not.In between on 25th July I received an email from Cognizant Acquisition Group that my application is application has been kept hold and they will provide me an update by someday but in case if I did not receive any communication within 30 days of that email then I can write to my respective recruiter with the some details like date of interview, skill set, city, poc name etc. So I am trying to write everything over the email to the recruiter but email has not been sent and it's showing "Recipient address rejected: Access denied" it seems that may be recruiter are not currently working in the organization.
I am submitting my complains here as because currently I don't have any other options. Kindly look into this. One update will be good for me to take me a right decision on my carrier.
waiting for your valuable response.
Thankyou