India Post — irresponsible postman

The postman named ganesh in medipally was the worst postman i had ever seen
He always return my letters by simply giving status insufficient address
When i visit to medipally post office.
He always lefts his office by 1:00 clock only
I don't know what are the timings of the postman
Is he doing work or not?
He is very rude person
He didn't know how to respect and how to talk with people
Pls take immediate action against him