Just today (it's just 2 pm EST) I've had 3 calls. I don't answer because I don't know the number and they don't leave voicemail. I'm not going to waste my time trying to call them back - it doesn't do any good.
I got 3 calls from them today also! they wont leave a message, so i will not call back! (i screen all my calls now with the answering machine..) I tell them on my message, if you don't leave a message i wont call you back!