[Resolved]  Axis Bank - Letter — misbehaving delivery person

To whome it may concern

Today around 12:30 PM a letter from Axis Bank(consg no:EW[protected] IN) was brought to my residence(21.P.C.Das Road.Howrah-711101) by one delivery person and refused to deliver it to our housemaid. Our house maid is literate and can put her signature as required.
But the delivery person told that her signature is not "PROPER".
My wife and I are a working couple and during this time of week days we stay at our working places.
Coincidentally and unusually we were at home today so we could see the incident as it happened.
We tried to explain him the situation but he shouted at us and told that "letters will not be delivered in this way, do what ever you can."
I am afraid if this is the scenario, then how many mails remain non delivered to us? And if this a stray incident, would any action be taken against the delivery person?