they keep calling but never leave a message.

Call from "Springfield, IL". Robodialer that wants u to think it's a person. Said we won a free vacation. Now blocked.

No message.  Another annoying call. Blocked

Called my mobile. Didn't answer. Voicemail is just dead air. Blocked now. My blocked list is longer than my contacts list. I'd vote for anyone that can stop these bleeping calls.

How do you block on a cell phone?