Finally after waiting for very long both my TPS and EAD has been approved.

TPS application received on : October 6, 2015 Approved on: August 2,2016
EAD application received by USCIS: March 18, 2016 Approved on: August 2, 2016

All the best for those who are waiting for their case to be approved. few extra things i did on my case was:

1.called USCIS several times to talk about my case.
2.Tell them to expedite/review ur case.

3.if they don't expedite ask for a senior representative with whom u can talk about expedite and about ur case.

4.wait till the time they say after u make ur expedite request,be careful and dont make multiple expedite request that can slow down ur case.

5.make notes when u call and ask things clearly that how long u have to wait after u make an expedite request (so that u can make another)and follow up with them the dates they give.

6.I went for infopass but the representative couldn't ans all my questions. but he said he'll email nebrasksa to review my case . I dont know it worked or not. July 25 was my infopass date.

7.I was about to do Ombudsman but without it my case approved so i didn't have to do that.

8.I wrote a follow up email to nebraska a week back but didn't get a reply. I got the mailing add from a representative when i called which is as follows: NSCFollowup.NCSC@uscis.dhs.gov
Hope it helps the people who are still waiting for approval.
and all my thanks to sajha members who helped me with their advice.

MY special thanks to Tare_MAM Bhai. Thanks for ur replies and suggestions at the time of need.