I continue to get unwanted instant messages (spam and/or "hey baby" ****) from people I do not know. Since they are NOT a contact of mine I cannot limit their access or anything else. Please tell me there is a way to block/stop these messages. I cannot see their email address to add to my blocked list. see examples below:

 

Messaging
 
Tracy Johnson
Hey i wanna meet you ,msg if you can
11:20 AM
Lasonya Kraling
well hello there
11:20 AM
Kallie Workman
Was up there...
11:20 AM
Valorie Dukes
Im all urs right now if you care..
11:20 AM