Unavailable/Long Distance  No message left.  They have called before and not left a message.

This number calls me at least once or twice a day everyday for the last couple of weeks. Don't answer calls I don't know the number.

This number has called several times, does not leave message.  I assume it is a telemarketer, but if so they should not be calling me as I am on the do not call list.

Called today...second time this month.

Called them back. It's the Heart & Stroke foundation looking for volunteers. Very polite. Just have to ask to be removed from their call list.