DTDC Courier & Cargo — package not delivered-

It has been more than 10 days now that i have been waiting for my courier containing medicines from dtdc. They told me my area is non serviceable. How is that possible when prominent courier services like bluedart, dhl, amazon, flipkart etc. Gives me parcels at my doorstep. Fact is even on their own website, they clearly state that they deliver in my area and at my pincode. Why am i being harrased and not being deliver my medicines. This poor service courier needs to be banned. Very poor customer service.