Non delivery of orders on 2 occassions! Possible *****.

I've had 2 instances now where Loots courier Fedex claim to have delivered an order I placed to my sisters work and can provide a delivery note. However the order was never received at the address or by someone working at the business. Attempts to engage Loot in assisting investigating me with this ***** have only been met with them throwing their T's & C's at me. While I agree as per the T's & C's they are not liable once the order has been handed over to their courier service, I do hold them responsible for managing their courier service and holding their service accountable for delivery of the orders. They could be more proactive in the investigations as we the customer have no direct contact with the courier company but instead Loot customer service is more interested in slow playing the issue and absolving themselves from all responsibility. I can no longer trust them as a retail option.