I have filled my IT returns for 2009-2010 on 19-3-2010 and also got E-Receipt for the same on 10-05-2010. I have paid my tax dues of Rs. 33761 and received the I TR-V form for the same with tax dues as 0. But I’ve forgot to send the I TR-V form along with some proofs to CPC, Bangalore. Now I have received an mail from IT dept. asking me to pay the dues of Rs. 28160. Some payed third party filed on behalf of me and not able to contact them now. Please advice me what needs to be done?