Register your phone number with National Do Not Call Registry by visiting the first link listed in the "Resources" section. Submit your email address alongside the phone numbers you wish to register--each email address may register up to three--and click "Submit." Check your email and click the link within your confirmation email to complete registration. You should no longer receive calls from telemarketers once the first 31 days following your registration have passed.
Contact individual telemarketers who continue calling you and politely ask them to stop. Inform them that you have registered with the national Do Not Call Registry and that by continuing to call you, they are in violation of federal law.
File a complaint with the National Do Not Call Registry if telemarketing phone calls continue beyond 31 days past your registration or continue from a company you already informed to stop calling you. Click the second link listed in Resources, click "Continue" and enter your area code and phone number and the date and time of the call in question to begin the complaint process.