[litenboll]

It's similar here in Sweden. Usually they require a call to support, officially. However, I think there is a law/policy that require them to accept unsubscriptions by mail/message, regardless of what they say on their website. I recently did this and it worked! Maybe there's something similar in the UK?

[eckesicle]

Yes that’s right. You can unsubscribe by any which way you want. Mail, phone call, pigeon. Any message sent to any employee or office in anyway is deemed acceptable for giving notice for any service or contract.