Just ignore AW's system and ring her. If she hasn't got a number displayed, shag someone else.
Punters don't need feedback as we are the customer.
You do have a point, I have to say feedback about how great some guy is in bed or the size of his cock is irrelevant in a business transaction such as this. We are the ones who need to bring the goods (so to speak!) However it is important to know if a guy is dangerous - aggressive, bareback pusher etc.. Or a timewaster too, not quite as crucial but still bloody annoying if you have travelled or booked a room or even just spent hours getting ready. AW feedback is rubbish but if you are nervous about your personal safety or had a lot of timewasters, negative fb will put a girl off. Having said that, this thread illustrates how easy it is to get round the feedback system! TWs are just part of the business really, and dangerous punters are unlikely to try to book you with a profile showing that they are dangerous so yeah, even that is irrelevant in practice I guess
To be honest once a girl has got enough feedback on AW to show she isn't a complete fake or secretly a man or anything, phone is probably easiest. I'd just do that unless you like to chat via emails, just in case you forget about using different browsers and clearing cookies and AW links your old acct as an alias..