Tds

I am working in PVT LTD Co.We got TDS Short deduction notice of Q-3 FY 2012-13.In Short Deduction 1)There is a short deduction due to PAN Error 2)Short Deduction due to Rate Difference.We have paid short deduction due to rate difference and we have rectify the PAN of one party.and after this we have filed the correction return of Q-3 FY 2012-13.but after processing same return we got the same amount of TDS notice of Q-3 FY2012-13 from CPC.Now what should be the next course of action from ourside.