Why it is easy to sell things to my housemate over the phone

[The phone rings. Brain-Damaged Toula picks it up.]

Brain-Damaged Toula: Hello? [long pause] Hello?

Toula's guest: Wrong number?

Brain-Damaged Toula: It's a telemarketer.

Toula's guest: So hang up.

Brain-Damaged Toula: It's a recording.

Toula's guest: You can't hang up on a recording?

Brain-Damaged Toula: If I hang up, it'll just be on my machine and I'll have to listen to it again. I might as well do it now.