Same as Dave. Electric telemarketer trying to save me money by switching over my electrical service. I would have saved .000156 cents per hilo-watt. A woping $.18 cents a month. Oh yeah rate only guaranteed 6 months.
Your scamming callers do not maintain this site or this web page. No callers can magically determine which numbers should not be called based on anonymous comments. Criminals who mass-dial and violate the Telemarketing Sales Rule have no plans to stop calling you no matter what you say and regardless of your DNC registrations. They need first to be sued or jailed.
FCC notes on various ways to combat nuisance calls (at least from legitimate sources)
http://www.fcc.gov/guides/unwanted-telephone-marketing-calls
The Do Not Call registry is not a shield or a filter or a guard on duty. It is *A LIST* referenced by compliant telemarketers and ignored by scofflaws who hide behind spoofed numbers and cheap VOIP.
The Telemarketing Sales Rule and Telephone Consumer Protection Act are written to mainly restrict *sales callers*. These energy provider slammers can claim to be "nonprofit" all they like, but why bother blasting everyone with solicitations to switch without a profit incentive, hmm? If a sales purpose is facilitated by a call, the TCPA and TSR do apply.