Hisense and HiFi Corp Jabulani

Hi. I am Norman. I will need help. I bought a TV at HiFi corp Jabulani. Its only three months old. The TV started giving a problem within two after a bought it. I phoned the manufacture Hisense. They have send a technician to come and access the TV. After a week no respond , i called them again , they came and fetch the TV. They took it to their repair center. They didn't bother to contact me. After three day i contact them to find out whats happening. They told me the technician didn't book in the TV. I did the follow up with them. I called till i get i get another guy by the name of Micheal. He assisted me , he told me the TV is faulty. They will bring it back. I must go to the store where i bought it. I did so on Saturday last week on the 7th September 2019. The told me i was not suppose to take the TV to the manufacture , they cant give me another TV at Hi Fi. I left the TV at stores Hi fi Corp Jabulani Soweto. On Tuesday the 10 September 2019. They phoned me after work around past to five. They told me to come and fetch my old tv. Hisense will come and collect it at my place on Wednesday , the following day. They will bring a new TV. Since they have not showed up. Til today. They keep on calling telling me that its gonna be delivers tomorrow. I am tired of their lies. Customer care is very poor between the two Stores Hisense and HiFi Corp. There is no transparency. My kids dont have a TV for four weeks now. I even call Hsense head office they are telling me the TV is not faulty. There is no communication among them self's. Lies after lies. I am very angry i dont want the TV any more. My TV was not fixed and warranty seal is removed from the TV. To show that is not repaired.. Please assist . Or they can cancel the contract i will go somewhere else. I an still paying the TV every month.