各位好，我在OBB上訂了從布達佩斯至布拉格的臥鋪
原本班車時間是19:29-08:11
前幾天發現OBB的訂單顯示如下警示：
Journey has Changed
There has been a change in the timetable which affects your scheduled
journey. Your ticket will remain valid. Please remember to find out about the
alternative trains or transports available to you during the time the ticket
is valid. If you have any questions, please contact Customer Service on +43 5
1717.
當下查了一下發現我訂的那天確實班次被取消，系統上看不到，我寫信至OBB未獲回覆
但隔了幾天又查，發現我訂的那天在MAV官網(匈牙利國鐵)又有班次了
但時間改成17:29-08:11，我昨日也趕快在寄信問匈牙利國鐵當然也是尚未回覆
我現在的問題是，我該趕快先訂MAV上有看到的班次然後到維也納時去退OBB票
還是OBB原本的票就可以直接搭17:29-08:11這個新的班車時間?
不曉得有沒有人有遇到這種情況?