Question /Possible RANT here.......First of all i live
My tricks for this are -- not that I don't get caught too! -- is to ask for their phone number and CALL THEM BACK, even to just say "Oh sorry, didn't mean to dial your number". Then later you can bug them in style.
Also when arranging for a meet, tell them to call you WHEN THEY ARE ON THE HIGHWAY (cell phone), ask where they are...!