India Post — misbehaviour of postman in name of government

A postman has come to give my postal letter back that i have send on rakhi. He made me waited for him for hours by saying i there. But he came late and at last he shouted at me and gave me lactures in name of government worker that "hum sarkari aadmi hai humari jb marji hogi tb aaenge nahi aaenge. Yeh tumhara sirdard h k tmhara letter tmko mile ya na mile"
Kindly take some strict actions against such workers.