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Bigfish games is the company that owns and controls Dungeon boss. For that reason, this is where you need to make contact in order to try and recover y our account. http://www.bigfishgames.com/blog/ios-iphone-ipad-ipod-help-faq-and-technical-support/#target_8
If you get in contact with support, and provide them with your itunes purchase history to show how involved in the game you were, they should be able to either A:) help you find your big fish account so that you can resume progress where you were before. Or B:) help you link your apple id to a big fish account so that you can resume progress.
This is the only path forward, you must make contact with Big fish games ( or check and see if your apple id was registered to bigfish ) and have them restore your game account and purchases.
Apple cannot do so as they do not control the game server on dungeon boss that held all your data. Bigfish does!
If you have further questions, let me know.
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