An open letter
I know you're only trying to do your job, I greatly appreciate that, and I appreciate every time you've tried to place me with a company that you believe will be a good fit.
But we need to talk; like most people I'm extremely busy during the day, I have a job to do, I've got bills to pay after all. Whether I'm looking for a new role or not, without a scheduled call the chances are I will not answer your call.
Again I appreciate you're just doing your job and have taken the time to try and call me, but if I take 1 call, the next thing I know I'm away from my desk for an hour and I need to make that time up, after all my current employer is who pays me at the end of the month.
If I don't answer your call, it's a safe bet I'll check the number later, and if you leave a voicemail I'll give it a listen and try to find time to call you back. This then saves you time later as you don't keep trying to call me and hit a brick wall.
An even better idea? Drop me an email, if you've got my phone number it's a fairly good bet you've got my email (it's on more of the information I've got publically available than my phone number is...), again I appreciate you want to use your skills of persuasion over a phone call, but if you can't articulate the same message in an email the chances are I'm not going to be interested anyway.
Using one of these two tactics almost guarantees I'll get back to you, what does not is constantly trying to phone me without any sort of message. At the end of the day I don't have the phone number for every recruiter, and like many people I will not answer a call from a number I don't recognise.
Being pushy makes me not want to work with you, calling me after 6pm without a pre-arranged call makes me not want to work with you. When I leave the office I try to stop thinking about work, I don't want to be fielding calls that I'm completely unprepared for after doing a full days work.
All I want from a recruiter is someone who respects that I'm a human, that I may be busy, and heck, I may not be avaialble at all at that time. Multiple calls / chasing emails does not do that, make use of asynchronous communication and save us both some time in the long run.