ITC without incurring the expense

JJJ (Need help) (675 Points)

18 June 2022  

Our bank mistakenly charged us the processing fee twice. So instead of debiting our account for Rs 11,800 (ie 10,000 + GST) the debit happened twice.

The first was ok and the second was a simple mistake so they said they will rectify it.

Now they have returned the basic amount of 10k only, and they are saying they will not return the GST component of Rs 1,180 because they say we should claim the ITC. 

We said that's not allowed because we have not availed any second service related to this ITC and we have also not incurred this expense, so how can we claim ITC.

But they say for banks its allowed. 

Sounds suspicious to me. Does anyone have any idea on this?