If you are receiving telemarketing calls to your cellphone, you can register it with the National Do Not Call Registry. You can register your home or mobile phone for free.
The National Do Not Call Registry gives you a choice about whether to receive telemarketing calls. Most telemarketers should not call your number once it has been on the registry for 31 days. If they do, you can file a complaint at this Website.
Scammers have been making phone calls claiming to represent the National Do Not Call Registry. The calls claim to provide an opportunity to sign up for the Registry. These calls are not coming from the Registry or the Federal Trade Commission, and you should not respond to these calls.
There is also a way to verify a registration. You can enter up to three telephone numbers. A valid email address is required.