I am trying to buy a Point-to-Point ticket in France from Paris to Metz. I would like to buy it directly from SNCF via their website, but when I enter my credit card number I am informed that the transaction was not accepted by my bank (I've tried two different cards). Is the problem simply that they won't sell to people with American credit cards or something else? If I can't buy from SNCF, is there another site I can use in hopes of finding a decent deal? Thanks.
Ivan