Unless the contract bound you to a specific term, I don’t think they will attempt to send you to collections. What do you owe if you haven’t contractually agreed to a subscription term?
Except they do give you a way to contact them. They ALWAYS give you a way to contact them. The fact that you can't follow their cancelation process all the way through is on you, not them, and that's exactly how the courts treat it after your account becomes delinquent and is sent to collections.
Hmm, legally you phone, verify your identity and say you're cancelling. Sure, they want to speak for 20 minutes to wear you down to say you'll accept a deal or try a couple more months ... but you're surely not obligated to listen. Once you've id-ed yourself and said "I'm cancelling" then you're done. Hang up. Sue them if they charge you again.
Companies rely on us feeling the pressure of social conformity.
Indeed legally I expect you can cancel by any reasonable means?
I just tried one place. They didn’t want to “verify” me as they had an old or different address on file for me. Tried to play cute with my name too. I recorded the interaction though.
They usually do, it's just that most people don't think of sending physical mail, nor do they consider it a reasonable way of dealing with such things (and they're right).
They could do something sneaky and keep your account access valid for a year even though they couldn't charge your card. Then just send you off to collections.