Cognizant Technology Solutions — offer letter not received - sap pp qm position

Address: Pune, Maharashtra, 412207

Hi,

I have been interviewed in cognizant on 13th oct 2018 at their pune phase 3 office and cleared all the rounds, after that hr told me that you are selected for the said position and you will receive offer letter within 2 weeks of time but after 2 weeks i have received only one communication from then stating that you are selected for the said position and that was system generated mail after that no communication from them.

Till date i have not received my offer letter and also don't know whom to contact / approach further

Can anyone help me with this...