My card was declined on a Northern Rail train; consequently I received a form which contained a reference number, a phone number I was to ring, and a time limit within which I had to pay the price of the ticket. I have misplaced the form, and was wondering if anybody knows (of) the number I'm talking about, or another number I can ring to obtain this number. The customer service number listed on the website redirected me to National Rail Customer Service, who were unable to help me.