DTDC — NON DELIVERY OF PAN and BLAMING me for the same.

Address:

Patna, Bihar

Hi i am Abhilash. NSDL has sent a PAN card of my sister in law vide consignment no. X05481144 through DTDC courier on 15.11.2013 which have not delivered to me. When i went to inquire the same to the DTDC office they told 2 different reasons - 1) Due to bulk consignment and strict time schedule to deliver it is tough to deliver and 2) Probably NSDL has not mentioned full address so we could not deliver. When i asked about non communication on phone they told phone no. was not available on the document sent by NSDL. They have sent back the consignment on 19.11.2013. However recently i discovered they have given the reason for returning the consignment that Consignee was not available at the address. They have blamed me regarding non delivery which is a lie. Now i want to complain against them so that they become more accontable. How can i proceed. Please help me and Guide me on the issue.