Blue Dart Express — courier misplaced

I missed a call from the delivery boy and he delivered the courier waybill no.[protected] to god knows who. When i called him back he said he has returned it, when checked it on tracker the status was still, delivered. I took my grievance to customer support few days later. The delivery boy called me very next day and said he delivered it to the neighbour while none of my neighbours get it and now he is dodging my calls. Such an irresponsible behaviour. When the receiver is not at home, the parcel should be returned. Moreover he delivered it to an unknown person and marked it as delivered to self. Such a disappointing behavior.