[predictabl3]

My CC company has been happy to handle this for me. A gym in a country I no longer reside in ignored all attempts to reach them to cancel a renewing, but non-contract, gym membership. The CC did a charge back and stopped future charges. Took a few minutes on the phone.

Additionally, I've taken to using my providers throwaway card generator to make site-specific ones that I can then one-click disable whenever I feel like it.

Granted, they only have this exposed through a fairly buggy browser extension, you can't just "do it" easily on the website, so I won't bother giving them the free marketing of mentioning them.