If you go on a busy day the attractive ones rotate every 15 mins to their rooms, so that does probably mean that yours didn't get picked. Also as someone mentioned, you also are overpaying a bit at $300, I've been to the one you go to a few times, it's $200 each girl or you can keep them the whole night for $600 or $800, forgot which one. It sounds like you're having a blast though! There's a couple other spots in the area with girls that are much prettier and has more English speakers and selection, but it sounds like you're doing well at this spot.