DTDC Courier & Cargo — regards delivery

I have couriered one important document (Bank documents) through dtdc courier vide docket no. B60027584 on 12th november. By 17th november they are delivered it to some other place and not informed me also. Once i found this information and contact that service provider and he was informing that, area is not serviceable. Then i asked him why you have not informed me earlier itself and he is telling that somebody should go and collect from there where they had deliver it. What is the kind of service is this. He has booked as door delivery and now he is arguing with me that it is not possible to deliver.