Need help on mistake by employer in tds

PREMAL VALA (Sr. Project Manager) (31 Points)

13 November 2013  
I have received Demand Intimation from Income Tax department for AY 2009-10 against my refund for AY 2013-14. While investigating I found that my employer has deducted TDS from my salary for AY 2009-10 and issued the FORM 16 and accordingly my return was filled. Those days FORM 26 AS was not that much known, so I could not verify that. But my FORM 26 AS shows only 3 entries out of 6 entries in my FORM 16. I contacted Assesse Officer at Income Tax office and he informed me that they cannot do anything unless my employer do the correction and proper TDS is reflected in FORM 26 AS. Thus my question is as I am not the existing employee of that company (as I left that company 3 years back), what if they don't entertain my request and does not help me, what options I have to get this corrected as if I don't do anything my refund for AY 2013-14 will be adjusted against this wrong demand. Please help.