Hi dear,
Some who call you darling,from my experience can be good, they probably can t remember your name. The best is, if you are not sure,ask them to send an email through AW,so you can have a look on their feedback.If you can ' t, screen them more or follow your instinct.
For those in AW who don t want to give their numbers, I would ignore them. That is my opinion, but other persons could have different views.