As far as I know, the K bookers all use texting, but on many Kgirl reviews, it says "she picks up". I've never been lucky to talk to a Kgirl on the phone. I reported some to TER suggested a category for "texting", but they say the guys reported "she picks up".
See Purple, Gloria, Cona, Cuti, Jayda, Kaya, Yomiko...  
How can there be so many mistakes.

Since there is no "texting" option, people report the next best descriptor. So, these are not "mistakes".
Since most hobbyists who use kgirls know that texting is the preferred communication, it isn't a big deal that this option isn't available on the TER form.

Bookers do prefer texts over phone calls. However, when I call the booker that I have previously used they always either answer my calls or return my phone call within a few minutes.  

it typically gives message that mailbox is full.
What I meant was that reviewers should use 'other' category, because even if the booker picks up, the Kgirl never does.

My best guess is that your phone number is blocked when you make phonecalls. When I bought a new phone, the default setting was to block my phone number on outgoing calls.  I didn't understand why they weren't picking up my calls anymore.  When I checked the setting on the new phone, I switched to allow my phone number to be seen on outgoing calls. The bookers started answering my calls again. Call your home phone to see if your phone number shows up.

Calls waste time.  Ask for girl by name and time you want.  If no answer, move on.  I've seem 150+ KGals.  Haven't called in 5-7 years.  Of course, if your play phone (you DO have a play phone, right?) is not an established number with the booker, might knock you out of certain ballparks, but just move on.  See a dozen gals and the number gets shared and you're in.  I had one time when the booker asked for references. I sent him an LOL and said, 'you first.'  Told him to check around or I'd be seeing someone else.  He did as I suggested.

while you're worried about these "mistakes" it's not a significant issue.  If some guys aren't experienced enough to know how things really work, they'll eventually figure it out.  If they don't, it doesn't matter.

that yuge ego who's vying for the White House.

should be selecting "other" until they give a drop-down choice for "texting."  For some reason, many reviewers select an inaccurate option rather than just say "other."  The previous posts are correct, texting is the best way to make contact if you don't have a way to contact the girl you want to see directly.