They are online courier service broker, their website is well-made and concise, easy to compare price, pick the service & book/pay - you can also cancel bookings by contacting via their web form. Got reply reasonably soon and it was hustle free to cancel a booking. Although my 2nd booking had a technical problem and the label was not issued immediately. Contacted them again during weekend and they sorted it out by Monday morning. The only minus is that their Drop Off icon on the map was pointing the wrong location (500ft off the actual location). Recommend to check the Drop Off location by yourself via Google Map + StreetView.