Hi Chris,
I think you could be right. I don’t think I’ve ever applied for a refund without calling the helpdesk because my issues are always more complicated. I’d imagine that the email should show the amount. It’s likely that the journey history will also be updated to show the start point added by the passenger. If the refund is for the wrong amount then I suggest calling the helpdesk and explaining it to a human who will have the full journey history in front of them.
Thinking about it, I’m surprised those validators aren’t continuation exit.