I'm sorry for the confusion, Frozenspirit. All of our character services can take up to 72 hours to complete (though it's usually just an hour or two); despite having been told that it's finished and ready to go, you'll likely need to wait a bit longer for the race change icon to appear in your character list.

If you're still waiting later today or even tomorrow please give us a call and we'll take a look:

Account and Payment Support
https://eu.battle.net/support/en/article/account-and-payment-support

[Guide] How to call Blizzard
http://eu.battle.net/wow/en/forum/topic/900641450

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