DTDC — Return failed and the franchise fails to track it

Address:	560032
Website:	www.dtdc.in

I have sent a parcel on 12.12.2016 through DTDC, RT Nagar, Bangalore office. Tracking Id - B37270300. Delivery failed and the parcel was returned from Mumbai of 05/01/2017. Till date I have not received the parcel. Return address and phone number were clearly written on the label.
Whenever I am contacting the franchisee for help, they will ask for the addresses and ask me to send email. No one is providing any kind of help to fix this issue.
I am regular with DTDC for last 5 years and also with this particular RT Nagar, Bangalore office. But nowadays service is very bad. No help can be expected from the Franchisee. Worse service.