If you can provide the date of the flight one of us might even find out the reason for the cancelation.
Can you provide the flight number of your rebooked flight or give us the exact arrival time at your destination?
Furthermore: Was it one ticket and was your ticket booked via AC, LH, LX etc. Might not be that important, but it would help clarify things.
We'd really like to help you, but for that you need to give us something to work with.