It must only be your phone provider who charges you. I call the #s back and never get charged. You may want to consider calling back. You never know when it is truly someone and they need to get in touch with you. I use to be that way until I ignored and ignored and it was my family out of town to tell me my papaw had a heart attack and my mamaw couldn't get her phone to work.

Half a ring and hung up,  as others. No message, of course. 3:19pm

Hung up

Called my cell phone. Did not leave message.

HALF A RING THEN MISSED CALL