India Post — Parcel has not reached in the destination code till now

A letter along with necessary documents had been sent on 08/09/2016 from kolkata legal Service committee office to the supreme court legal service committee office.track no. is -EW[protected]IN.But unfortunately the letter had not reached yet.what a shame that INDIA POST acts such an irresponsible way...I didn't track my parcel.it was very important documents.