This is a theoretical question. On Thursday I went to collect some TOD tickets from the machine. It said it could not make contact with system do go to ticket office. Ticket office was shut due possibly to failure of staff to arrive on time. Machine was dispensing tickets upon payment. As it happened the tickets I was collecting were for another day but had I wanted to travel immediately would I have to have bought new tickets and if so how does one get a refund for the uncollected ones. Could one risk getting on the train and collecting tickets at destination where presumably the machine would be working?