I got an Audible win today - found that I had a recurring subscription but I never have used it. Must have been some free trial with an Amazon purchase. It's been running for months and months - total of over $270! - and I could not find an Amazon account it's attached to.
So I called them today. They will not specify the Amazon account it belongs to because 'security', but they say they've stopped the payments and will refund the entire amount.