Final settlement not clared

Location/place: gurgaon

Name of company/service: peton civil engineering pvt.ltd.

i give resignation on 31/01/13.but till now they are not given my final settlement.Presently the company change the name from petron civil engineering pvt ltd. to KAZSTROY INDIA SERVICE GROUP.I send mail many times but till now they are not responding.MY EMPLOYEE CODE IS- 1677.