People can block most telemarketing sales calls by adding their phone numbers to the National Do Not Call Registry at donotcall.gov or by calling the phone number listed on the website. People may still receive calls from political campaigns, charities and companies with whom they have recently done business.
People who add their numbers to the National Do Not Call Registry should stop receiving sales calls within 31 days. Consumers who register online must respond to the follow up confirmation email in order to initiate number blocking. Those who receive unwanted sales calls after registering their numbers should contact the Federal Trade Commission, as companies who violate the National Do Not Call Registry face fines if they continue to call blocked numbers.