WOODBURY - LIPA has failed to deliver acceptable services in the past year, according to a new nationwide survey measuring customer happiness. The latest American Customer Satisfaction survey gave the company 58 points out of 100, despite a 3-percent rise in the number of customers pleased with utilities overall. Study organizers blamed outages from Tropical Storm Irene that went unfixed for more than a week, as well as high electric rates. LIPA officials say the report ignored a recent price drop and only compared the company to three other municipal electric businesses. Only Delta Airlines scored lower than LIPA, with 56 points.