I bought a kettle from Makro online on the 5th of January, and they sent me the wrong item , immediately I called them to return the item it took them two weeks to fetch the wrong item

I bought a kettle from Makro online on the 5th of January, and they sent me the wrong item , immediately I called them to return the item it took them two weeks to fetch the wrong item. after that I've been calling them like a fool no response No refund nor my kettle. The reason for me to buy a kettle is because I don't have one... Now I don't know anymore ...