Sinotec TV Shows Android and then after it switch itself off

I bought a Sinotec Smart TV 50 Inch at Game Mall of Africa on the 06/07/2021, on the 03/06/2022, the TV just shows Android and Switch Off, I went back To Game where I was told not to bring the TV Back instead they will fill the forms for the supplier(Sinotec) to collect the TV from me and they will call me when the come collect. 3 days went by no one is calling me on the 10/03/2022 I went back to the store where I was told that they submitted paper work to the supplier (Sinotec) and still i found another Customer with the same TV i have a Problem with returning it to the store, on the 17/03/2022 i took the initiative to call Sinotec Service on the number ***, that when i was told that the form I filled at Game was wrong, i have to fill another one sent to me by email. after then week went by the TV is still sitting with me, this week on the 22/03/2022 Tuesday when I call back to tell them to come collect the TV or give me my refund, the tell me the same story that i Filled the wrong form, guys this is not the way we do business I need my money back, i cant wait for another 2 weeks for my TV to be fixed, this TV is under 5 years warranty why are they taking so long to fix their problems. I don't need the TV anymore because it shows that they have the same problem