Dismal after sales service

I bought a brand new Defy DGS679 gas oven. After delivery I had a registered gas installer install it, the ignition system to ignite the gas work with normal 3pronged household plug. The moment it was plugged into the socket it tripped the electricity of the home. I immediately logged a complaint. It took them a whole week to eventually respond to my request, where upon I was informed, I had to wait so they will log a technician with Defy "in due course". I also tried to log the defective oven to Defy directly, and they refused to do anything as it was apparently up to HIFI corp. to log the defect. My family have now been without means to prepare food for two week and neither HiFi corp. nor Defy demonstrated any sense of urgency to this matter. They are very quick in making the sale, however after sales leaves much to be desired form both companies. I had simply been told by Defy to wait until a technician is in my area. So herewith my warning when dealing with either HiFi Corp or Defy products, buyer beware, after sales is basically a joke.