DTDC Courier & Cargo — my package is still not delivered

The people working in the dtdc courier service of bommasandra are so irresponsive. Last time when i tracked my package it was showing customer will self collect. I never said that i will visit their office. How can you people change it without asking me. When i called them yesterday to know at which office my package was there, they told me that it was missing. How can you people be so careless. Its been half a month since i have been waiting for my package. If it is not sorted soon i'm going to file a complaint against dtdc courier services in consumer court for fraud and theft. D74141835 this is the reference id they gave me to track the package.