I eventually opened a case with VISA to get them to stop payment to the Wall Street Journal because every time I called to cancel, I got a message that their call centers were closed due to COVID. As far as I can tell there was literally no way to cancel for several months during 2020. I do enjoy their reporting as a more right-leaning alternative to the New York Times but I have learned my lesson and will never again subscribe to WSJ.
Meanwhile, the I have cancelled the NYT several times relatively painlessly (via online chat) and even been offered a discount to remain a subscriber, which I view as a much more consumer-friendly retention tactic.
If anyone from WSJ reads this (unlikely, ha), you should know that it does not matter how good your reporting is - if you use predatory tactics to prevent cancellations you will turn off many potential readers simply out of principle.