Totally dissatisfied with poor service

Hi <br> I have purchased a Hisense 55 inch 3D LED TV 8 months ago where Game beat the price of Dion Wired. The TV stopped working and I sent it in. I did speak to the manager at the time I gave the TV in, he mentioned to me that I will get a replacement or another TV with the same specs to the same value. Now they come back to me and tell me that they can give me a credit of R8000 and I can see which TV I want to buy. I did mention to them that I will not accept the credit for I want a replacement. The manager was fairly rude to me and says he is unable to help me any other way. I tried contacting Game head office *** numerous times but there was no answer and if someone answers they transfer me to all the incorrect departments. Game expects me to buy the same TV with the same specs that cost way more than the credit they are giving me there is a difference of R4000 which I m not prepared to pay. All I am asking is for Game to please replace the TV I had. Reason being I have no peace of mind in a repaired TV and Hisense was supposed to be SA second best TV Brand. Its strange that SA second best Tv Brand only last 8 months. ALL I AM ASKING IS FOR A REPLACEMENT OF THE TV I HAD.