Unfair treatment of an employee

<div>I bought a hisense 58"smart TV worth 7999.00 on the 21st of January 2023 and all the necessary procedures were followed ie checking the TV before I left the store and it was perfectly fine but unfortunately the following day on the 22nd which was on a Sunday when I switched it on a red line appeared on the screen running down of which it was a technical issue I immediately reported the matter to the store and I was told my TV needs to be booked in for assessment a 2 day purchased TV To be booked? The rule says 7 days, My complaint is that a customer can come in the store with the same issue as mine screaming and throwing tentrums and they will be given their money back without any hesitation I can't do that I have to be professional because I am at work

I need to know what is the difference between (THE INTERNAL CUSTOMER PLUS A TEAM MEMBER AT THE SAME TIME ) and the external customer why? is the treatment not the same?!!!</div>