TeamViewer deleted this post, so I'm reposting it again. Just confirms what my original post stated.
Original post:
Be aware that TeamViewer will be unwilling to work with you should you decide to terminate your subscription. I have not used TeamViewer in over a year, I have no need to use it in the future. I was recently charged again for another year. When trying to proceed with terminating and receiving a refund I was told they sent an email (to an inactive account) and because that email was sent they cannot cancel nor issue a refund.
Very poor business practices.
I have recommended others that I work with to terminate their accounts and use a different service. If this is the way they treat their customers they shouldn't have customers. So, I make the same recommendation to anyone in this community. Terminate your account and find another service - TeamViewer is terrible.