Stuck with a broken kettle

I bought a Sunbeam s\steel cordless kettle at Makro Corwnmines on 21/07/17, within a month it burnt underneath and you could not remove the kettle from the cord as the plastic had melted. I took it back to them on the 22/08/17, they would not take it back as I did not have a box and they advised that the 'supplier' (which I presume would be Sunbeam in this case) will not take it back without the kettle. First of all I stay in a small house and do not have space to store boxes every time I buy appliances.

The lady at Makro advised me to buy another kettle and use that box to return the old broken one, which was what I did and I got a credit note. Now three months later the ****** thing is not working, I cant take it back as I do not have a box and I am not going to buy the same thing again in order to be able to return it as clearly its going to break down in a few months.

I want my money back, I want a new kettle. Someone must sort this out as soon as possible as I am not losing out on R200 just like that.