My son was told at Waterloo the other day at the ticket office that off peak begins at 9.00am. He was trying to pay the extra for his ticket to Egham as his ticket was only valid from 10.00am. The person in the ticket office refused to take more money because he said it wasn't necessary to pay more. Still not convinced, my son asked for something official saying that off peak begins at 9.00am. The person in the office wrote a confirmation on a piece of paper and stamped it with an official stamp. This isn't right is it?