If I don't recognize the number calling, or if it's blocked or whatever, I don't answer. If they want to talk to me, they can leave a message - and the message had better say who they are. I have a lot of bill collectors after me, for debts incurred MANY years ago. I often get messages like "This is an important message for (pause) Randy Raphael (pause). Please call xxx-xxx-xxxx immediately." ummm... no. If you can't identify yourself, I ain't calling you back.