You can unsubscribe the membership by doing this:
- Click ‘Settings’ in the topbar (under your name/username)
- Under Account settings (scroll down a bit) you'll find a yellow 'Unsubscribe'-button
- Click the ‘Unsubscribe' button to unsubscribe
When you have unsubscribed the membership, you receive an e-mail confirming the membership has been unsubscribed.
Even though you unsubscribe the membership before it expires, you can still use it the for the remaining days as you paid for.