Do not call again!!!

THey call and leave no messeage yet you cant call back..

HOW IS THIS LEGAL?

Robocall to my cell phone.  The recorded message said it was concerning my electric bill with Cleveland Electric Illuminating - but I'm not even their customer!  Message went on about some offer to lower rates and then cut off in the middle of a sentence.  Great random telemarketing when they can't even finish spitting out their scam.
    Yesterday my cell was called from 360-633-9027, one digit off from today's call - when I answered the line had already gone dead.  Whoever runs this campaign must really be perfeshunal.

My cell number is on  "do not call" registry. Got a call from 360-633-9028 that asked me to type in my number - thought I would not receive any more call from that number so I entered. Now I am not sure if my action would remove me from "do not call" registry. So went to "don not call" registry site and entered a complaint on this number. Same way I receievd several calls from NJ number 9081458854. registered complaint agains this NJ number too.