On the 29/03/2025 purchased a TV at branch: OK furniture Roodepoort

On the 29/03/2025 purchased a TV at branch: OK furniture Roodepoort. The TV was tested at the store. When I got home it kept on switching itself ON&OFF within 15min. The store logged a call with Hisense to attend to the issue, an email was sent to the OK consultant to forward the email to do the troubleshooting steps. That wasn't a success, because the TV was still going ON&OFF. On the 04/08/2025 a technician (Donny) was called to come to my house to inspect the TV, he told me that the "Mother board of the TV is faulty" and if I need it to be repaired, I told him I need a new TV as a replamement. I can't allow a brand new TV to be repaired. OK furniture,is going back and forth with Hisense so that they can issue out the Credit note. I have been too patience, but I feel like my understanding is being taken for granted. I am highly disappointed with the service received thus far.