Horrible customer service (brand new broken oven)

Worst customer service I have experienced in a while. We bought a brand new Defy oven and hob combo, after first use of the oven, the front glass burst and shattered into pieces due to the heat escaping from the oven. The unit is clearly faulty and the incident could have been much worse. We proceeded to contact defy to get the repair/replace process under go. This has been over two months ago! We have had three different technicians out to do an "assessment" with no follow-up afterwards! We always have to contact them! It seems that they don't communicate with each other and no one knows whats going on. Three technicians and a **** load of empty promises late, we are still sitting with a broken oven.