Who/What ever this is calling using their Robo/Auto dialers hangs up after 5 or 6 rings and never leaves a message.
I susupect it's the same one that have called my number in the past 60 days from 2012974636, 2012974628, 2012974634, 2012974723 & 2012974722.
Who/What ever this is has also called my number from 2012974636, 2012974628, 2012974634, 2012974723 & 2012974722 in past 60 days...
Their robo/auto dialers always hang up after 5 or 6 rings and never leave any message.
This number is relentless in its attempts. I suggest using some of the techniques offerd by the pros here on this page. Don't let them bother you and if possible, get another ine for friends and family and turn the phone off. I suggest you have friends and family who have been contacted suggest to those calling them that they know nothing and DO NOT CALL again.
Good luck to all.