Why does she refuse to text me but calls instead?

Why would a girl never text you but calls you? She texts other people and even tells me that she corresponds with others through text.

But...she won’t text me at all, like AT ALL even when I start a text convo. I’ll tell her that I’m busy but she still keeps blowing my phone up just to talk. (By the way, we’re just friends).

She expects me to answer my phone all the time and refuses to communicate via text. Plus I’m aware she’s getting them cause she’ll repeat what I said in the text while we’re on the phone. I even brought it to her attention but she dismisses it. Is this some kind of tactic? Why would someone do this?