DTDC Courier & Cargo — m71673527...consignment not received more than 15 days

My track no is M71673527. My consignment has still not been delivered and its been 15 days. I have also registered a complain but there is no response yet ( case no.[protected] I tried calling local desk at Ranchi severl times but phone no does not work or people do not pick. Customer care also does not respond. I am writing this after a pathetic service of DTDC which was never expected from the elite organisation like yours. A normal consignment does not take 15 days and still not reaches.