Seniority of direct recruits

I am a central govt. employee joined the govt service as Multi Tasking Staff in the month of May 2013 through SSC Exam- 2011. The Advt for the exam was published in 2010, exam was conducted in February 2011 & result was declared in September 2011. Recently it is gathered that I was placed below the persons appointed on compassionate ground during the month June 2012 to December 2012 in the seniority list. Further, your kind attention is drawn to Hon. CAT, Principal bench judgment in O.A. No. 1391/2013 in Hon.CAT observed that the direct recruit shall placed above all the person appointed on compassionate ground during that year without disturbing their inter-se seniority. Further DOPT in various memorandum explained that the person appointed as a result of earlier selection will be senior to those appointed on sub sequent selection. Recently I have filed representation to concerned authority but yet the seniority list is not corrected accordingly. Sir/Madam plz guide can I file appeal before CAT or what? Plz .