TGV预定问题

今天上网去看火车票，却发现我要去的那天，显示是白色的。这是代表票已经都卖完了么？？？不是灰色的，是可以卖的日期，是白色的！！！不知道TGV会和意铁一样，过一阵子，又有票出来么？还是意味着，我只能改日程了？谢谢！


*************事件进展 3月21日********我3月20日在TGV官网上留言，今天收到回复了，回复如下*******Dear Mrs Guo,Thank you for contacting the Voyages-sncf.com customers'service.You have tried to book a Paris-Nice on March the 14th but you could not manage to get it. Unfortunately, it is not a error system, all the trains are sold out for this day. Best regards,Anne NEMMOTYour customer Services www.TGV-europe.com. Monday to Sunday between 8am and 8pm (excluding holidays)