Their online Delay Repay request process is a farce. The process requires you to give them a physical postal code in Scotland (even though I don't live in the UK), so I selected one at random - turns out it's irrelevant, since they email all communications and refund via your credit card. The language on their website and emails requesting more information, then denying your claim, are clear as mud. Apparently, if you request a refund for a one-day ticket, you can't use the online request process but must go to the station where you purchased it. For anyone who doesn't live near there or travel there often, that's all but impossible. My entire one-week ScotRail experience, from advance ticket purchase to onboard service to enroute miscommunications to service delays, left a very poor impression on my first-ever trip to Scotland.