State Bank Of India [SBI] — harassment

Address: Sirohi, Rajasthan, 307501

While interacting with the bank employee
I was collecting my new debit card when this employee tells me not to address him as yaar in the future
My line was yaar how do i activate my card.
I ask him how do i address him he says 'sir'and that's how everyone addresses him.

I have no problem addressing him as sir but is this the norm that a bank follows and he tells me to leave from here and go to bank the manager.

On asking his name he refused to tell me his name.

I am in the army with a service of eight years and should i go around sirring people with whom we expect to be treated with regard and who provide us with the services of a bank.
What kind of culture is this bank promoting.

And like a mob other employees come over to you saying we are a team and will stand together.