DTDC Courier & Cargo — courier not yet delivered on time

This is to draw your attention to the unsatisfactory courier service by your company. I handed over the packet with reference number V43909132 on 4th May 2018 at Nayandalli Roadbranch(franchise & it was an emergency document so sent it through DTDC Plus & Rs 195/- courier charges, Not been delivered till date, but there has been no satisfactory measurements taken on the part of your company even i complained in customer care regarding this Case no: 11335738 to give details of the delay no answer from them also.
Courier status showing its delivered to the city but still not yet delivered to recipient. today evening my father visited to branch, then we came to know its laying at office. Kindly check why they haven't sent my courier on time.