Makro does not want to refund my money

We bought a gas stove( Elba 900mm 5 bunner gas stove, stainless steel)to use it at my confectionery for baking and I was promised that the Gas stove bakes the best cakes ever. They say the stove bakes them slowly and they will come out Gold & Brown.<br> However every pan of cookies I put into the stove, comes out pitch black. No matter how much I try to control the stove it does work.<br> This stove is actually a liability to me because I buy stock and intend to make profit instead I'm loosing all the money I invested in the stove and my business. I have to pay my stuff for all the work done that went down the drain, the electricity used.<br> The stove is not working as promised by Makro sales people and I paid a fortune for it. Now they do not want to refund me my money. I want my money so that I can go buy a stove that will add value to my business.