Incremental arrears

Sir, My last working day was 14-april-2017, in a private company in Andhra Pradesh. Our salary month start from 26 to 25 in next month. My full and final settlement is not yet done as on 27/04/2017. Company paid incremental arrears @6% on ctc to all employees regarding Fy 16-17 along with salary of march 17 (26/04/2017). Except me. My question is I've worked throughout FY 16-17, and up to 14th April 2017 in FY 17-18. When I talked with my hr. He told that arrears of fy16-17 will not be paid to you and regular salary of march 17 and April 17 will be paid in final settlement which is under process. Please suggest in view of legality. And if i'm eligible for incremental arrears of fy 16-17. Plz suggest me how to get my dues from company. I served complete notice period as per my appointment letter