Poor service from Makro in Springfield Park

I bought a new stove from Makro in Springfield in KZN on the 19/06/2020 and when we set it up it did not switch on .... on the 23/06/2020 I returned the stove and advised that it was faulty. I was given 10 working days to come back. 10 working days was up on the 07/07/2020 but now i have not received the replacement or my money back. It is not my fault that the product given to me was faulty and instead of the store to provide either a replacement or my money back they are telling me that its still with the supplier... today its the 14/07/2020 and this is really fastrating and my patient it running thin. Its either the store refunds me or give me a new working stove. I had to call them several times and each time im told they will get back to me but they never do. Today I went to the store but I was given a very poor feedback that it still with the supplier. How do we resolve this issue