I just got spammed on my phone

I generally leave my cell phone off except when I'm using it. But recently, and for the next few days, I'm leaving it on all the time.

Anyway, it just buzzed about a missed "call"; and the "call" was a spam text-messsage ... for which the phone company charged me $.20 to inform me.

It's just a simple phone, nothing but a phone (with a small display screen, as everything has these days).

Color me ticked-off.