India Post — Unethical behaviour

Address: Rupnagar, Punjab, 140101

Earlier i received my mark-sheet torn in pieces, i didn't complaint about as i managed it from my institute. And on 20/10/2016 at 16:30 when postman came to deliver another letter i reported the same to him as i wasn't present the earlier day, he started yelling at me stating he is not responsible, i don't know who is responsible but would like you to teach some sense to the postman & take appropriate action against the postman & Responsible Person for maintaining the document good.
postman deliver the letters in old post office street, morinda