Faulty products and bad service

I'm so disappointed at the products of Hi-fi Corp. ? I bought a fridge there 6 months ago and it just stopped working. I don't understand how it was of good quality if it stops working after 6 months. Now I'm being sent from pillar to post for help with the repairs even though I am still under warranty. Their customer care is pathetic and very useless in providing assurance to the consumer. Even went to the Woodmead branch I bought it at and was referred to Stephen Khoza (manager) who was not helpful at all. He told me that he will see to it that the supplier sends a technician asap but that hasn't happened. I have been without a fridge for a week and I'm really frustrated. I am going to take this matter to the highest level because I am not being taken seriously. ?