Who called from 6464390681

Same, no sound on either end. Out lasted them and they hung up. BLOCKED!

Same here, no voice mail, and called once only. Once is enough: blocked.

Receive a phone call from this number, heard a message about blocking the number so I hang up.  Not sure what the call was for.  I blocked the number of course.

Same here. They called my cell, no vm. Didn't answer.

Ignored to voice mail.