TCS — Interveiw call

I am a candidate of tcs off campus drive held on 2nd december 2015.
After the online written test i recieved a mail that i have successfully quallified the written test and i would recieve my interveiw call letter within next 7 days. But till now i have not received any interview call letter. I had send my querry to ilp support but did not get any properly satisfying answer. Their reply was "request you to kindly await. You will be soon updated with the details on your registered email id" and till now i am waiting... Please clear me what is actually going on??
Should i really wait for the call letter or loss the hope??
Here i am sending the cpoy of that mail.
My login id is dt[protected]