The do not call registry is a government service. Visiting folks in Florida, the phone rings about ten times a day. Caller ID is not enough, and scammers call claiming to be this agency, offering to register your number.
2 ways to register your number:
go to: donotcall.gov and fill out form.
From the phone you want to register call 888-382-12222.
Every action causes a reaction!
Go for it!
FYI: copied from public site:
The National Do Not Call Registry gives you an opportunity to limit the telemarketing calls you receive. Once you register your phone number, telemarketers covered by the National Do Not Call Registry have up to 31 days from the date you register to stop calling you.