Income tax tds refunds amount differ from filed amount

I am having TDS Amount of Rs.42185 in Form 26AS i have filed the income tax amount and claim the refund for Rs.35510/-  before two days i have received the 143(1) order that TDS in the Liability is Rs.16585/- out of 42185/-  and Given a order in the last page of 143 (1) that amount matched with the TAN is Rs. 16585 / -Amount of Mismatch Rs.25573/-  i asked the TAN pArty they told that we have filed everything corretcly i have checked the Form 26AS also it shows correctkly amount of Rs.42185/- no  error in the Column Status of Booking everything is in "F" Can any one tell how to get the refund of balance amount Rs.25573/- From IT Where the request to be made