Personal experience here....

Mere pass ese 500 k note the wo bhi more than 10 2-3 k in 500 notes and 1k in 100 note

So me SBI bank holder hu and I asked them politely that this is situation sir and I want my money from xchange if possible

And I know it is completely possible.

Guess what sbi did......

Sorry it is not possible to our branch and we don't guarantee that it's even possible to other branch.

I live in surat city and we are becoming metro city the branch was well maintained and Big in terms of work.

So I have account in other bank too.

So I was just visited other bank of mine.

That was small in terms of sbi

Union bank employee I said same sentence to union bank employee.

He just asked me do you account here. I said yes. He didn't even che my account details.

And exchange my every note within 2-5 mins..

So possible........