Welcome to the Spotify Community!
It sounds like someone may be accesing your account. To prevent this, go to https://www.spotify.com/account/overview/, change your password and press the "Sign out everywhere" button.
Playlists can be restored at https://www.spotify.com/ph/account/recover-playlists/. Let me know how it goes!
Right now, it's only possible to restore playlists
Hey there you, Yeah, you! 😁 Welcome - we're glad you joined the Spotify Community! While you here, let's have a fun game…