Terrible after sales service at Builders Warehouse, Atterbury

I bought a Ryobi wall chaser machine on 24/08/2020, that turned not to work well. Whenever I tried to cut tiles, it would cut a bit and lose power. I ended up not doing my job. I decided I would return it and get a refund and rather buy a different brand.

I went back builders warehouse Atterbury where I bought the machine. They call in a technical called Sibusiso who runs the machine on power but not cutting anything and he concludes the machine is working. I explain, yes it runs, but loses power when cutting. I call my tiler for him explain this situation, who happened to have left his phone on charger but somebody is running to him with the phone, but Sibusiso tells me he can't wait for that, he has to be on the floor. I ask him to explain their returns policy to me but he just point to the wall and says, there it is, read it and he leaves. I chase after him with the phone to speak to the tiler and after the chat he insists its working and he is returning it to Ryobi.

I am telling him my job is standing and I need to buy a different brand machine but he leaves and the machine gets booked for repairs.

I wonder what manner of unfairness is this, that the machine is not tested for the problem I describe and the machine gets booked for repairs hardly 7 days from purchase. And I have to wait for however long that takes.

All I ask for is a refund and I buy a machine somewhere else and my life goes on