Yup, someone just posted about TeamViewer's version of this scam a few hours ago:
"30 days before your subscription expires, teamviewer send you a friendly email to remind you to that your subscription expires in 30 days and to be sure to renew before then in order to not lose service.
What that email does not tell you is that unless you cancel your subscription at least 30 days (ie on that very day) before your sub expires they will renew you automatically and demand a full year's subscription under threat of legal proceedings..." - https://news.ycombinator.com/item?id=32164897
"30 days before your subscription expires, teamviewer send you a friendly email to remind you to that your subscription expires in 30 days and to be sure to renew before then in order to not lose service. What that email does not tell you is that unless you cancel your subscription at least 30 days (ie on that very day) before your sub expires they will renew you automatically and demand a full year's subscription under threat of legal proceedings..." - https://news.ycombinator.com/item?id=32164897