I got approached by an Amazon recruiter, and instead of just ignoring him, I decided to see "what's out there". I'm a staff SWE level at a decent company, so not exactly desperate to leave.
He proposed a hard time for a phone call later that week. I replied saying that I have conflicts at that time, how about we do it next week? Didn't hear back from him for a couple of days, and then he replied saying he's too busy next week. OK then, can you let me know when you're free?
Never heard from him again.
Sounded very unprofessional to me.