India Post — Missing of hall ticket for sainik school entrance exam for my son

Address: 517501

Sir we received registers parcel on 21 Nov 2016 . That's belongs to my son sainik school korukonda entrance hall ticket . But the registerd parcel is open condiation and we not found hall ticket in this parcel . The pacel is name B Suresh Kumar 20-5-139/b sanjay Gandhi coloney korlagunta tirupati . The post man handerd this to Mrs nandini who's rental this house she says, the parcel is open condiation, this so loss to my child pl verify @action about it