Effective April 9, 2021, LSO offers a Money Back Guarantee on Express LSO services: LSO Early Overnight, LSO Priority Next Day, and LSO Economy Next Day. For additional information about the LSO Money Back Guarantee, contact customer service at 866.230.6887, Mon-Fri 7:30am – 7:30pm, and Saturdays 10:00am – 1:00pm, or email [email protected] Or, get more information about the LSO Money Back Guarantee.