Salary TDS payment notice to employee ( Kingfisher airlines)

Case - Back in 2008-2012 when kingfisher airlines was functional they had deducted TDS of Employees and not remitted to govt

now that TDS amount has been claimed by assessee  as the same was deducted from his salary but as income tax department has not received tds amount they have raised demand on E filing portal for the said amount ( amount is more than 50lacs)

The ex-employee has all the salary slips and relevant documents which prove that his TDS was deducted.

conclusion is we want to remove that demand from our efiling portal as it is not legitimate.

Thus i seek your advise on process or way out fot this problem

Thanks in advance