Wrong pan quotted at the time of deduction of tds from salar

Sumit A. Raval (Student) (190 Points)

13 April 2013  
Dear sir, please tell the procedure when it was found that employer had deducted tds on wrong pan & also issued form 16 having wrong pan, due to which no tax credit was available & the tds returns were not revised till date by employer.... The same mistake had been continued for more than 3 A.Y. Pleas help me out.