Not willing to assist when sending clients a broken item.

I bought a thermostat for my smeg oven from Lategans & van Biljoens. I received my parcel and upon opening the parcel the item was broken. They now say that it is not their problem and that I need to sort it out with the courier company. Firstly, their packaging was up to ****, a piece of a box just cut off and taped with selotape. Not even properly packaged. This is unnacceptable. And they now refuse to assist me.