This is why you should never sign up for automatic billing. I had an issue with Verizon some years ago, and was glad I had taken the time to explicitly pay my bill every month. I told a customer service person to cancel my account at the end of my contract. When this didn't happen, and I kept receiving bills, I spent some time trying to navigate customer retention (i.e. "customer disservice") without much luck. Fortunately, I had made sure to never enable auto-billing, so I simply stopped paying, and they eventually took a hint and cancelled my service.
I'm glad I have a pre-"Cloud" version of Lightroom, so I don't have to deal with this nonsense.