Expensive Hisense tv giving endless problems

Good day.

I bought a Hisense TV from Makro. Last year in October my tv broke down and they replaced the backlights for me. I was very happy with the service. Then about a month ago, the backlights again just died and it had to be replaced. I waited about two weeks for them to collect the tv and more than two weeks for them to just fix the tv. The tv is still under guarantee. Eventually, yesterday they returned my tv. The delivery driver wanted to test my tv to show me it is working and immediately the backlights died again. This is now the third time. When I spoke to the service center via telephone the second time the backlights died, I told the agent I don't want the tv back. The tv clearly has an issue regarding the backlight. They informed me that they can only fix the issue and return my tv. They can only do something after the third time the tv has the same issue. Now it is the third time. It is more than a month and I am still sitting without a tv. I don't want that tv back in my house. It is a very expensive tv and I don't think it should give me so many issues. Please take note, I either want a new tv or my money back.

Kind Regards Allistor Wedders****