Probably been well covered but pretty much cancelling
anything! Insurance, subscriptions, cable/Sky TV you name it. They make it so easy to opt into these things but getting out of them so difficult. Virtually all of them can be easily signed up for online with no hoops to jump through or human interaction required but cancelling is the exact opposite. Usually involves you having to phone up and speak to an actual human. Even if you can do it online it's often hidden away somewhere not obvious. Spotify is a classic example, can easily sign up through the app but cancelling requires using the desktop site