National Energy Rebate Fund, a company led by a former Grand Junction man, wins the dubious honor of having the highest number of consumer complaints through the Colorado Attorney General’s Office in 2009. Of the 631 complaints about rebate offers last year, 627 were about NERF, according to the Grand Junction Sentinel , which reports that the fund, owned by Tim Stubbs, was fined $100,000 by Attorney General John Suthers in January for defrauding customers on rebates they were promised for energy-efficient housing materials. Stubbs has also been ordered to return $4.2 million to more than 14,000 customers around the country, as the state seeks a judgment against his personal funds. But he has left Colorado and may be living in Costa Rica, although his company Web site  indicates a willingness to pay rebates. Throughout last year, consumers filed 1,984 complaints with the consumer protection division of the attorney general's office, according to a news release . That's down nine percent from the year before. Yet nationally, a separate report from the Federal Trade Commission ranks Colorado second, behind Nevada, for its rate of consumer complaints to all law-enforcement agencies and Better Business Bureaus, notes The Denver Post .