DEFY SERVICE SUCKS

I bought my Defy oven at Macro, they were very helpful with both my complaints. First one the oven's temperature was not working, they came out fixed it, no problem, then the element blew, damaging the oven on the inside. I phoned and spoke to the manager, and complained about the oven, this is the second time I am having trouble and the guarantee is until May 2016, he was full of excuses and recon I had put water in the oven... really. Well they came out, the electrical guy said the inner oven was damaged and will come back to me. He did replace the element but I did not use it as the whole oven inside was covered in white poisonous powder and not to mention the food that was damaged when this happened. They phoned after a couple of days and said they need to replace the cavity. The electrical guy came and disconnected the oven, left live wires open This was Monday, yesterday Friday, my husband called and apparently the service section had not yet received the cavity to replace. I am without a oven, no sorry, no explanation when I will be getting my oven... REALLY after paying over R 5000.00 for this oven which I had to save for. NEVER WILL I BUY DEFY APPLIANCE AGAIN!