Thanks for reaching out to us, well do our best to help you out.
When you cancel your Spotify subscription, you should receive an email notification with a custom playlist.
If you received the notification, but were still charged, you might have cancelled the subscription after the last payment went through. In this case, you can continue using Spotify until the account goes back to Free automatically.
If you didn't mean to pay for Spotify, we suggest contacting our Support team via Twitter or Facebook. They'll take a look at your account and see what they can suggest.
“Music acts like a magic key, to which the most tightly closed heart opens.” ― Maria Augusta von Trapp