My suggestion would be for you to create a new account with a different email address from the one you use for facebook (past or present). That will give you a Spotify username of your choice, so you won't have to rely on facebook anymore.
Once you have this new account, like @user-removed said, contact customer support and they'll help you migrate your Premium privileges, library, playlists, friends, etc. to this new account.
osorniosRock Star 24
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