Leave a message...
"Hi, you've reached Kensi. Leave a message and I might get back to you.
If this is urgent, you know what to do.
If this is my long distance service provider, no, I don't want to renew my plan with you. Stop calling or you'll have lawyers chewing on your legs.
If I dated you last week and you haven't heard from me?
Don't bother leaving a message at all."
~beeeep~