I agree with Haywain. "A scanned ticket is as good as a used ticket" doesn't sound like the language of a Railway Rule. I'd ask Ratan to send you the actual text he's relying on, or to admit he made it up.
The argument that someone else could have used any reclaimed ticket holds no water anyway. Any ticket could have been used through barriers that were non-existent or open. So no record of its use anywhere. It's just something the seller/refunder has to accept, once given a reasonable explanation.