Misleading advertising and policies

I purchased a Hisense TV online on 9 November 2023 and it was delivered on 11 November 2023. I took the TV out of the box on Monday 13 November and switched it on to see if everything was in order. The TV was not picking up any channels as well as the picture quality was not as good as I had been advertised. I tried to log a return online for a few days and received an error. I then called the customer care line on Sunday 19 November 2023 where I was told I cannot return the TV because I had plugged it in. I did not accept this as a good enough reason as the return policy on my invoice never stated anything regarding not being able to return the TV but stated a 14 day return policy. On 20 November I called again and was told that my matter will be escalated. Later the day I received an email saying that I cannot return the TV. I have requested the policy where clients are advised that Makro has this policy in place - but I have still had no feedback and my 14 day return policy is about to come to an end. I have had many problems with Makro in the past and have always just set it aside - but I find this completely unacceptable. I will definitely not to recommending any of my family , friends and colleagues to purchase any electronic items from Makro - I myself will never shop there again......