Pathetic service

I bought a fridge from Hirschs in June. A week later i called to say that it's not working as it should. A technician from Defy was sent. He reset the settings and said to see if that makes a difference and if not we can replace the fridge witin 6 months. A month later and we were in the same situation.I called defy, a technician came over, looked into the fridge and left. I didn't receive any calls or feedback so i tried calling. I left messages and no one called back. I eventually got through, another tecnician was sent,he left and no feedback. After sales service is pathetic. Five months down and im still waiting