Here in Sweden you can cancel a subscription however you wish (as long as it's within reason). You can send a company snail mail, email, go by their office, phone, text, whatever reasonably reaches them. They're not allowed to pull the "Oh, buy you have to call [number which leads to an antichurn department]" or "please tell us why" (but of course they're gonna try anyway. If it's an online form you usually have a "I don't want to disclose why"-reason).
Sorted Food. Once they started with the Pass It On format they really declined. Now all their videos are pass it on sand Chef Reviews Gadets and no more actual cooking videos, especially not recipe videos.