So today I bought an Off Peak Day Return for Peterborough-Grantham. Purchased at Peterborough today at 3:15pm. My intention was to spot/take photos and then catch the 17:02 as loco 90028 was back on this diagram. The 90 came in but the train was cancelled. I checked RealTimeTrains and overhead wire issues between Doncaster/Retford plus a failed Mk4 set in Grantham obviously was going to result in a bit of chaos. So I decided not to travel and went to the ticket office to explain my situation. I was told that because of the time that I bought my ticket I might have already travelled and was trying it on to get my money back. I denied that. Then I was told if I wanted a refund I would have to pay the £10 admin charge. I refused to do that. I said I would try to claim back my fare through the cancelled service. Was the person in the ticket office correct with their decisions?