For anyone else who runs into problems with eFax. E-mail them, say you're deaf and therefore unable to call. It worked for me. Often dark patterns have great dark patterns that work in response.
How does Truebill make money? It seems a little too good to be true to be free. I mean, I can think of a bunch of perfectly acceptable ways to make money off this (selling anonymous information about what makes subscribers unsubscribe to companies, for example), I would just like to know before I sign up what exactly I am signing up for.
eFax does it everywhere. I paid $0.99 to send a fax and ended up with two monthly statements for $16.99 that were not refundable. It's disgusting and it should be illegal.