Poor after sale service - Fed up!

I purchased a Defy fridge expecting it to be in working condition. After connecting it, I found that the fridge light comes on when i close the fridge and goes off when i open the fridge. Similarly the fridge cools when the door is open and stops cooling when the door is closed. This is a factory fault and I reported it to the store from which i purchased it. They have put me on to Defy that have come out to look at the fridge. The technician took all of 3 minutes to see the issue and left saying they will have to order a part. It has now been a week since the technician came to view the fridge. I have called Defy on many occasions asking for an eta on the part but no one has been able to help. They keep saying that they will send an email to find out and call me back, but nothing. No urgency on their side. Defy have my money and I have their product that doesn't work and no way to refrigerate my food. I am fed up!