Cognizant Technology Solutions — Offer letter not released even after 6 months

Hi,

I attended an interview with CTS at Bhubaneswar on Jan 18th 2020 and cleared all the rounds. The interview was for Informatica Powercenter. At the end, HR informed me that I will receive my offer letter in a week but I haven't received yet. Meanwhile I received an email from CTS talent acquisition to upload my Photo in one of their portal. After that, I have got several call from CTS HR asking for CV and querying about my joining status. But after that I don't receive any further updates. Also I do not get any response from the calls and emails I send to CTS asking about the status. It is already more than 6 months but they still now haven't released the offer letter.