EWC Couriers Lost my Laptop

My laptop was in for repairs at Let me Repair (George). On Monday, 16 March 2015 the device was dispatched in George - back to East London. Yesterday I phoned to track the status of my laptop, only to be told the laptop has been lost??? Lost by EWC Couriers somewhere between George and East London??? How does this happen??? I spoke to the owner, Benita, she apologized and said they will keep looking for my laptop but she thinks it has been lost.....I really do not understand this - how can you trust a courier company like this???