Hifi corp

I bought a tv 40" sansui, home theater and microwave in 24/01/2014. The TV is now faulty and I took an extended warranty on on it. The centurion store has moved and now I called customer care service and I was advised to call the woodmead store so that I could request a pick up to repairs. The phone rang continuously unanswered and the customer care didn't assist. When I call my calls were kept on being cut off. I'm not happy with the service at hifi corp and now I'm frustrated because I can't find help for my TV to be fixed. Please help me to get through to hifi corp to come get the tv for it to be fixed.