I normally purchase monthly Anglia Plus zonal season tickets, for travel in two of the three Anglia zones (Cambridge and Norfolk), costing £323.60, which I use to commute between Cambridge and Norwich. My ticket expired at the end of last week, and this morning I called into Cambridge station to purchase a new ticket. Because I'm going away next week, I only needed a weekly ticket, instead of the usual monthly. I asked for the weekly Anglia Plus zonal ticket for Cambridge and Norfolk, to let me travel between Cambridge and Norwich. Since I don't normally use the weekly ticket, I didn't know how much it would cost, but I was told it would be £105.80. This seemed reasonable, at roughly a third of the cost of the monthly, so I paid for the ticket and went on my way. Whilst on the train, I looked at the ticket I'd been sold, which was printed as a season between Cambridge and Norwich, route any permitted. I thought this was odd, since my monthly tickets normally say between Cambridge and Anglia Plus, route via Ely. After getting home tonight, I've checked on National Rail Enquires, which says that the weekly Anglia Plus ticket should cost £84.30. I now believe that I've been sold a "normal" season between Cambridge and Norwich, instead of the Anglia Plus Cambridge and Norfolk ticket. Is there anything I can do to get this rectified, and the difference in price between the two tickets refunded? Will the staff at Cambridge station be able to do anything about it, or do I need to write in to Greater Anglia customer services?