A bit off topic, but this pattern is the worst. It happened to me with Hellosign. I signed up for the free trial and never remembered to cancel. I saw the charge last year and thought “oh well,” then forgot to cancel again this year. I literally did not login even once for a year, but then like clockwork they charged me $140. What annoyed me is that it seemed like they intentionally went radio silent for a year, so as to not remind me I was using their service. I received no marketing emails, no pre-billing email, and no receipt. They just silently charged me $140.

To their credit, they refunded me when I complained about this.

Personally I think it should be illegal to renew annual subscriptions without some kind of reminder that the bill is coming up, or an opportunity to cancel at some point, especially if you never even used the service. Heck, I might go so far as to say that annual billing should not be allowed.