Rude and derogatory customer service. They do not respect legitimate complaints and do not follow their stated guarantee. "We also guarantee that all contact lenses will be delivered free of any manufacturer defects or we will replace them at no additional cost." I was rudely advised that something was wrong with my eye when I advised them of some defective lenses. My optometrist confirmed that my eyes were healthy and the lens.com supplied lenses were defective. They refused to provide a refund and I was told by their representative that in the 10 years of service she's given she's never heard of a partial packet of lenses being defective... they also didn't bother answering my initial email, so if you have a problem you'll need to call them for service.