Someone ruined the game for me by clearing all levels

Hi,

I made a public party in the game and didn't understand what it did. Someone joined and cleared all further levels. Now, the characters are all asking me to claim the rewards for doing so and all my missions have changed. I don't want this, is it possible for the game's admins to remove all the changes from my account? I last remember still being in the mud-flaps.

Thanks for the reply. Guess that's that, I'll start over.