On January 1, 2005, telemarketers became responsible to search the National Do Not Call Registry and drop the consumers from their lists who registered with the service. They also became required to search the updated lists every 31 days. Finally, if a consumer receives a telemarketing call and has registered with the National Do Not Call Registry, they can file a complaint with the Federal Trade Commission on line, or call 1-888-382-1222 toll free.