Called us & did not lv msg, caller ID showed phone #.

We called them back. Recording says "the person at ext. 555 is unavailable. Please lv a msg after the tone or press #. Sorry but the user's mailbox can't accept more messages", & immediately disconnected the call.

We called again & pressed # - & it disconnected us again. We shouldn't have to return a call three times to even find out who they are/why they're calling - & we won't. BLOCKING the number.