Not sure what you are spewing here, or where you may have read that.. Kinda some out dated info there.You may wish to read these and update your information.
"Federal law stops them from doing so" Please give us the exact law you are referring to so that we may examine it for ourselves and determine if your statement is correct. It is always been the proper way that when making a statement of fact such as that to provide a citation of your source.
4 more SCAM ALERT BEWARE: CRIMINALS - Solar Panel = Received unsolicited call. Criminals looking for gullible victims. YET ANOTHER INDIA/PAKISTAN CALL CENTER CALL BLOCKED