I'm not very familiar with the k-girl scene but there is a separate k-girl section on the board. And for what its worth most (if not all) of the posts there are just like yours- mainly about not getting any responses back from them or their bookers. Seems communication amongst the k-girl set is spotty at best.

but once you get in its worth it. I really like Sera's Booker shes really nice, TJ he usually has latte in Santa Monica, but hes disappeared for a while now. And my Top booker is Cuti's Booker. I am trying to figure out who use to handle Lush, she was a nice Kgirl. Just see girls who will be your reference. 2 is good enough. Than call who you want to see, not fridays, seems fridays is impossible even for regulars. And than usually you get a text, and give them everything they want. now next is the tricky part, they will text you back a little later and say all clear, or just ignore you, i havent been able to figure out the ignore part. Well Good Luck and enjoy.

I recently. posted the following on the K-doll forum. It applies equally to you.

"on TER la review board with reputable independents specially Asian ones . I would avoid texting 4 or 5 K-dolls every day because some hire the same booker & you might give the impression you are attempting double booking. Be patient & continue reviewing & the doors to K-doll paradise shall open.'"
You may want to check the K-doll blog who provide K-doll profiles that are used on TER reviews.

http://lakstyleblog.com/los-angeles-icons/sexy-lohan

Start in the SFV and then you will have references for LA, Santa Monica, etc.  I'm not sure if they share data but it appears they do and once you are in.....you are in.