Defy bad service

We bought a defy oven a couple of months ago from Makro online. Within the six-month warranty period the bottom oven is not coming on anymore, the top oven blew 2 elements. We logged a call with Makro, and they referred us to defy. They told us that a technician will make contact with us within 72 hours. Up to date no one contacted us. We phoned Makro and they are passing the buk to defy. Phoned defy more than ten times and they keep telling us that there is no feedback on the call. This is terrible service from both Makro and defy. Will think twice before buying from defy and Makro again.