Unhappy - order not received

I placed a order online, when it was delivered one of the orders were incomplete whereby I only got one shoe instead of a pair. Further more it had one order short, as I ordered 4 pairs of shoes and only received two and a half pairs.. I called immediately and was told to return the incomplete order and that the other order still on its way. I double checked this in the store they advised the same thing. When I got home I received notification confirming the return of the incomplete order and that all other orders were delivered. I called again and was told they can't get a hold of couriers and will get back to me... I'm still waiting. I then sent my own email and was responded to after 24hours saying order status shows delivered, and no other response received since then...i still have the package that was delivered and I can take a picture to show that it's impossible for 3 boxes of shoes to fit in it. And it confirms package 1 of 1... This is unacceptable service and when I call they can't even give me a reference number to refer back to. Even the couriers didn't want to wait for me to come and sign for delivery they made my mom sign instead, which is weird because I have never signed for a package as long as I been ordering online, and then this one time the order is wrong they requested a signature. Sound suspicious to me... Awaiting your response, either deliver my shoes or return the credit to my account. My order number was... Order number P***