Cognizant — No communication By HR on Offer Letter

Address: Noida

I am Maneesh Kumar (SAP BW/HANA Consultant), I have attended technical interview in Month of May and in month of July got confirmation mail saying that I got selected and to submit the CIS form to proceed further, then I have submitted the CIS form with required details and replied back.

Later on I got HR call and discussed about my package and designation, after that HR confirmed that they will release my offer letter, but it's been more than three month now and still I haven't got my offer letter and also no updates.

Please help me in getting closure