Have tried that in the past and guys haven't turned up as a result.
Most escorts who I see, only use the online booking system for feedback purposes, not actual bookings.
I myself wouldn't do an online booking without no other form of contact with yourself.
Before I set off I would at least want to have a brief phone conversation.
For me the online booking merely reserves the slot, the booking wouldn't go ahead until contact had happened.
If you worded your profile as such, you are gaurded against it happening again.
It just depends how you veiw contact before a booking,
Some escorts want to cram in as many bookings as they can in a day, and see communication as a unecesary part of the booking process.
Of course not saying that you do.