Easy fix, wait for the next billing, contact the bank explaining what happened, and block that and future debits.

At least in Australia, this shouldn't be a problem.

I assume you have a consumer protection agency. Ping them.

Put it in plain words. "I have been paying... they made it impossible to access stuff I paid for and made it impossible to unsubscribe."

That's textbook fraud. They'll be fined and give you your money back.

Sad story but this has been written by an LLM (to original short story has been inflated by and LLM to turn into an "article"). Speak w/ your bank and ask them to block future charges - easy.