DTDC Courier & Cargo — Parcel undelivered since a month

My parcel was dispatched from bengaluru on 10 july 2020 it reached krishnanagar (I called the office (No response), nadia wb branch on 17july. Its been a month.. There's no more update and i didn't recieve my parcel yet, and its showing. Delivered successfully. Kindly look into this, my consignment no. Is b71553740, as a customer i atleast expect the service giver to atleast update and inform me.. If there's some issue