It is the responsibility of every D.D.O. to deduct require amount of income tax as T.D.S. at the time of preparation of bill and issue Form 16 to each and every employee showing the amount of tax deducted at source. In case any amount has been deducted in excess, the amount should be denoted as refundable. In view of the above you should file your I.T. Return after having Form 16 from D.D.O. and if any amount has been deducted in excess, the same should be refunded to you by the I.tax department.