[Resolved]  Cognizant — no further updates after clearing the interview

I had my cognizant interview in kolkata on the 2nd of february, 2019. I had 3 rounds including face to face discussion with hr. I got my call letter through a consultancy. On 6th feb, i was informed by the consultancy that i am selected, and will get further communication within that week or by the next week. It has been more than 2 weeks, and i have not received any communications from cognizant. I am doing follow up with the consultancy, but they could not help and are just trying to avoid questions. I called cts hr team, and they also did not respond. I enquired in cognizant contact us, and they mailed that one of their associates will reach out to me shortly. But, no updates. Are they not ready to give offer letters? If so, why are they taking interview in every 2 weeks? Has anyone got their offer letter who gave interview on the 2nd of february or thereafter in kolkata?