by AverageJoe » Sat Jun 20, 2015 7:41 pm
If you deleted the character yourself or if you shared your account info and someone else deleted the character, there's no recovery for it. However, you could try verifying you're logging in with the correct account. There was a thread here a few days ago where a user leveled a character to 60 and logged in one day to find his 60 deleted and thought for sure the server had deleted it (And was blaming the staff). After verifying he was logging into the wrong account, he found his level 60 (Whoops, that's embarrassing).
Check your World of Warcraft Classic\WTF\Accounts folder. Inside the Accounts folder should be a more folders with every account you've ever logged in on and created characters with. Check to see if your level 11 Night Elf is under any of these.