Unhappy

Bought an LG black smog smart inverter microwave from takealot.com. Our kitchen is a new kitchen what we had built in 2017. Our only main plug source is on the inside of the pantry. Most microwaves come out with either a two point or three point plug. We had to alter the plug to get to the power source. Only owning the microwave for +- 3 months there is a hole burned in the microwaves door after barely using it. They keep on blaming it on our negligence and refusing to have it fixed and saying we forfeit our warranty.