India Post — Delay in delivery of speed post

sir, I had sent a parcel through Speed post from Bongaon, North 24 parganas, Westbengal to Tauru, Haryana on 14th July 2015. Speed Post tracking shows that the parcel is received in Bag Despatched to Tauru S.O on 17th july 2015, but it is still there and not delivered to the recipient. Speed Post Tracking Number is EW[protected]IN. I tried too many times to spoke to the concerned person/department of Destination Post Office through their phone no.[protected] but they are not responding my call for last 7 days. I have registered complaint on 25/07/15. Complaint Number: [protected] but they not respond.