I was able to speak with a live agent. Maybe you can get them to stop the charges.
Yes this is a scam. I'm in the same boat as you. I'm being billed for something I didn't sign up for (intentionally), and since I wanna cancel, I'm obviously not allowed because I keep getting that stupid recording. According to the Better Business Bureau, they go by another name being Southern Magazine Promotions.
This listed on credit card charges, with description 'Discount Savings UBA' (do not know what that means and cannot find anything on google)...does anyone know what this is? I have called the number, always get voicemail which does not identify who they are, and leave a message - have not received call back yet.