They claim delivery attempts which have not happened. They return packages without attempting delivery. Both of these have happened on numerous occasions to me and others I know. They do not take responsibility for their non-delivery claiming it's the customer's fault (?!?!), their 'customer service' is rude and unhelpful, and they never offer refunds for lost items or non-delivered. Their 'delivery guarantee' is a joke! A horrendous 'service'!