Breaching contract by selling false

This is in regards to the Bradlows Mayfield branch, I started the contract with Bradlows late January.

Firstly they sold us a display laptop and claimed it had never been used only to find a Bradlows user when starting the laptop up at home, that wasn't too much of an issue so I let it slide but they had not delivered the wardrobe at that moment. I had to call everyday to find out when I will be getting the wardrobe and every time it was the same answer of its coming soon, then finally when I wanted to take the wardrobe of the contract the manager at the branch promised to borrow me the wardrobe they use as display till they deliver my actual wardrobe, this was 3 weeks ago and still there is no one getting back to me on what's happening. I will definitely not be paying full price for a display laptop and wardrobe which even arrived with a broken morrow. I took images of the display wardrobe they promised to borrow us in the store and took photos of the one they delivered under false pretenses saying it was from a different store(springs) which was a lie since it had the same broken mirror as the one in store