LG Microwave bursts into flames

I bought an LG Neo Chef microwave from Game Canal Walk. After 5 months out of the blue, the microwave just started to shoot out flames from the side inside the device. Game sent it to LG to be fixed. I received a message from Game Canal Walk stating that the microwave is now fixed and that it was ready to be collected. After plugging it in at home the same thing happened. A big humming sound and sparks once again. I informed LG that I was not happy with this device and would never feel safe using it in the future. It has only been in my ownership for less than 6 months. I did a bit of research and found out that this microwave brand has a history of bursting into flames. I want LG to refund me for this microwave. I do not want it because it is dangerous. LG please just give me a refund. Show that the safety of your customers is more important than your profit margin.