New moochers keep using my premium account and facebook wont let me change password!!!

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I'm a premium user.

My account is being used by moochers, how, I have no idea.

Everytime I try to change my password it says I have to change it on facebook.

When I change my password on my facebook, it still remains the same on Spotify.

When I "Sign Out Everywhere", new users still show up, creating playlists. 

I want to completely sign out everywhere.

I want to disconnect my account from facebook. I tried to do this but under the "Social" section in Spotify Preferences on the desktop app but there is no option to "Disconnect From Facebook".

I want to lock out any current and future people from mooching off my account. 

Help. Please.