We're glad to hear you've recovered the access to your account. Unfortunately, currently is not possible for us to recover those playlists that were un-followed.
In this case, we suggest you change your password and log out of all devices. Doing so will log you out of any device you’re signed in on, in order to reverify. Also, if your account is linked to Facebook we suggest you change its password too.
If you see any suspicious activity on your account, don't hesitate to contact us through any of our social media help sites: @SpotifyCares on Twitter and Spotify Cares on Facebook.