Hisense warranty - lies

*** we bought a new TV 4 months ago from Makro and it broke, it has 2 LED strips that malfuntioned causing lines accoss the screen. We where advised that a technician would come repair the TV at home and if he can't a replacement would be arranged we objected to this as a new TV should not break within 4 months. we where instructed to let the technician take the TV to Hisense wich we did he removed the TV on 07 March. I have been following up and was told a week to get the TV back. I Yesterday called in *** ws told that my issue is being escallated and a credit would be arranged to get a new TV, I was asked to call back after 4 hours and obtain the credit note number / voucher to do this. When i called back i was told i was **** to. I am not sure where to go to complain anymore as everytime i call in the call centre has a different excuse and no one can help to say when I can either get a replacement done or our one back seeing as it has now been almost 2 weeks already? This is the worst company to deal with to get either a repair or replacement arranged as no one gets back to you and staff lie to get you to stop asking questions