I'm supposed to be leaving tomorrow from Saint-Pierre-des-Corps (a train station near Tours, France) at 07:17 (going to Gare Montparnasse, Paris), but it was suddenly cancelled just 10 hours before the trip (about an hour ago)!
On their site, they offer a "ticket exchange", although not really, because you have to pay the full price of another ticket and get nothing back. I thought I could manage with that, but apparently there are no more places on the next train. If I take the next next train, I will arrive at Paris at 11:30 (that's more than three hours later than my original reservation) plus I have to pay an extra €20 for the train ticket.
I need to be in Paris before 09:30 tomorrow, because I've also bought a bus ticket to Beauvais, and, long story short, if I'm not at Paris at 09:30 on 19/02/2017 I'm going to miss my flight.
Is there any way to dispute this with SNCF?
Their communication lines are open between 08:00 and 22:00 and by the time I got their cancellation message I had no way of calling them or sending them a message through a chat.
I've done this trip multiple times and it's the first time something like this has happened. I'm thinking I should go to the train station tomorrow and demand to take the train that apparently has "no places left" - I don't care if I travel comfortably, I only care about not missing my flight. The problem is that their boutique (basically their offices) opens at 10:00 tomorrow, so my chance to catch my flight will be lost by then.
What rights do I have in this situation?
Are there any alternatives?