Was travelling North this week on Cross Country. Somewhere North of Derby the girl opposite was asked for her ticket. However she did not have her railcard with her.
The ticket inspector then politely asked her to pay back the discount she had received. She agreed and proffered a debit card which was refused. The ticket inspector explained this was because of his machine and did she have any other means of payment. When she said she did not he said he could phone for authorisation. He did this without actually speaking on his phone so I do not know how it was done, but the payment was taken. He also gave her a form to claim it back.
He was a model of politeness.
The authorisation centres we use at
XC▸ are simply a push button service, for small amounts it is a lot easier to swipe the transaction and then call it through at the end of the carriage than to stand in the aisle and do it. You get to know which cards have a habit of 'innocently' declining and when there's something more dodgy going on.