Cognizant — offer letter is getting delay not received yet

Address:

honga sandra main road,10th cross, garebhavi palya,bangalore, 560068

Hi,
I attended an interview at cts manyatha tech park bangalore on june 20th 2019 and cleared all the rounds. At the end hr informed me that i will receive my offer letter with in weeks but i haven't received yet. Meanwhile i received an interview status mail from cts talent acquisition, after that i haven't received any updates. I am not sure if normally they would take almost a month to release the offer letter.
It's been one month... I haven't received offer letter yet...

Regards,
Chamdeep