item missed

I use the equipment management to replace the item,but missed Icecrown Glacial Wall,I donnot know where it is, why?
Icecrown
ID:Seraphpala
I have submited a ticket ,but no one answer me. Can anybody help?

Did you check in-game mail?

If it was bought with coins, you can do item missing ticket via my account -> support.
If it was obtained in-game as loot, and it's nowhere to be seen, you'll have to obtain it again.

Ticket response may take several days.