Infrequent traveller but had a bit of bad luck with the trains recently so I’ve ended up with £60 in rail vouchers from delay repay claims. Today at Glasgow Queen Street I attempted to redeem these for a couple of single tickets from Glasgow to Edinburgh for me and my better half. After much attempted voucher scanning for 10 minutes, I was told that all 4 vouchers (2xTPE and 2xLNER) could not be redeemed and I would “Have to send them back to the train companies concerned as they could not be scanned and are invalid”. Ended up having to pay cash for both tickets. Is this right? All the vouchers are legitimate. Do I have to send them back? Most confused. thanks for any advice!