[Resolved]  India Post — complaining about postman not to give letter to my mother

Address:

Hoshiarpur, Punjab, 146001

My name is dr. Gaurav sood. I am a dentist from india and right now i am living in canada and my address is b-3 62/46 karkhana bhagwan dass hoshiarpur punjab india. Name of the postman in our area is gulshan.
I am explaining the incident that happened on april 18th 2018. There was an important letter under my name from medical dental association and he went to my house to deliver it and he asked for me. My mother said that i am not there so she asked him to give letter to her but he refused and asked my mother to come to general post office next day
On next day (19th april 2018) my mother went to gpo at 10 am and asked for letter and he said why do you want letter if your son is not there, and he refused to gave letter to her and he said you can go talk to my head if he allows or not
Then my mom went to the head (I don't know his name) and explained him everything and the head talked to my mom very rudely and he said if postman don't want to give you letter then its his choice i can't do anything.
Letter was there and my mother saw, it was written there, reason for not delivering was door locked but in reality it should be person not available at the moment
So my question is who the hell they are to decide if they can deliver letter or not?
Who gave them right to talk to people rudely like that?
They are there to help people or to harass people?
I have lots of important letters coming under my name
Doesn't matter if i am there or not unless someone is there they should deliver it to them.
My request here is that please take a quick and strong action against gulshan and his boss and i want my letter asap.
Thank you
Regards
Dr. Gaurav sood
My contact is +[protected]
My mothers contact is [protected]
My email is "sood. [protected]@gmail.com"