I bought a defy 30lt...

I bought a defy 30lt microwave last year and two months ago my microwave stopped working still under warranty I took it to the store I purchased it from hifi corporation promenade and hifi corporation apparently booked my microwave in with absolutely no communication I had to drive up and down to check if the microwave was fixed apparently a defy technician was at hifi corporation store to check out the microwave and I was then told it was fixed with no communication or no testing my microwave was given back to me and the manager said the defy technician fixed it in the store I then took their word only to get home and when I plugged my microwave in it was not working still back to the store again only to be told the defy technician says he doesn't need to fix it cause there was a ****roach in so now my two year warranty is of viod so there's nothing they can do I'm the looser of a defy microwave with a two year warranty