Bad service

I bought a Hisense 50 Inc smart T. V last year and it was not working properly then on the 15th November 2021 I decided to return it since I have a warranty of 4 years.

My return was rejected, the reason for that they say it doesn't have a warranty sticker of which I didn't know of and perhaps they removed the sticker at the warehouse and claimed that the T.V was repaired. After 2 days they returned the T. V back to me but when I check it out I found out that the T. V have few scratches on the screen but my T. V didn't have any scratches before I returned it and I asked myself why are they doing to me.

When I call to find out what happened the consultation was very bad they also have attitude up until I asked to speak to the manager or the supervisor and they transferred to Zena D, so she advised me to log another return so that they can re evaluate the product.

So as I am waiting for the feedback the following happened the warehouse responded with a email stating that they return is declined once again due to the product being physically damaged and broken as they sent me the pictures of the T. V being broken on the screen.

What hurts me the most is that the condition of my T. V was not bad at all it was just the minor issue on the display sometimes display show some disturbing lines but if you restart they eventually dissappear, now they have broken it and refusing to replace it.

Please advise me what should I do? my family is without T. V and they think that I sold it! now every day I am fighting with my wife and I think I shouldn't have returned it from the beginning. I'm deeply hurting and disappointed I don't know what to do anymore because I call every single day sometime 10x a day but my matter is not taken serious.