Poor Service DEFY 621 Kitchenaire Stove

I bought a Defy DEFY 621 Kitchenaire Stove from Game Stores. Because of condensation of steam inside the oven have lead to rusting. A technician from Defy came out to check the problem. He then logged the problem. I then had to phone Defy to check when they are going to collect the stove. I had to phone Defy twice after the first call before they came to collect the stove. They said the turn around to fix my stove is 4 days. I phoned them a week later and they told me that they have to speak to the manager before they can order the parts but they will come back to me. Two days later I phoned them again. Again they told me that they have to speak to the manager before they can order the parts. Yesterday I phoned again. This time they told me the technician is busy assessing the stove and that the cavity of the stove is faulty. Again they have to speak to the manager before they can order the parts. I then asked for the manager's name and contact number. I was told the manger is George Georghiou. Today I tried to get hold of him but there is just no answer. Today is now the second week. Please give me feedback.