Keeps calling me & won't leave voicemails!

Calls, but does not leave a message.

Just got this call today for first time...no voice message...seems to follow the pattern of other
calls I'm getting from 855 area codes.....best thing to do is screen your caller ID and if you don't
recognize the number don't pick up.....pretty annoying though

Received call and did not leave message

Calling about something related to alternatives to pain medications. Told them they had the wrong number.