I don't recall authorizing them to renew every time my subscription runs out, though maybe it was in the fine print somewhere. It was two years ago so I couldn't say for sure.
Anyway, I find this behavior from a company that's meant to be a consumer advocate to be quite inappropriate and unacceptable. They have my email address and phone number, they could easily confirm or at least notify me. I would probably have renewed, but I've emailed them asking them to cancel my membership and refund it either in full or pro rata. They may have lost a subscriber through their practices.