Systemic incompetence and disinterest in its customers

Good concept but the worst possible execution. Customer Support is appalling - closing queries without resolving anything. Management and accountability is absent. They routinely overcharge for customs duties and withhold declarations to avoid detection of their mistakes. This incompetence and inefficiency causes long delays in the clearance process. They overcharged my last shipment by 121%! No apologies or any kind of remorse expressed. Their systems are broken- constantly sending wrong emails. And in other cases not sending required notification.