Substandard products from Makro

On the 18/09/2025, I bought a TV box(Nova) unfortunately I experienced problems and I returned it on the 01/11/2025, and was told to wait until 14 days and suddenly today I received a call from Makro centurion and was told that that product was never bought from them and is not their product and they don't even consider the receipt that I provided with as proof of purchase, so , when I arrive ws referred to a gentleman who speak venda they say he is a manager and he was so unprofessional and undermining everyone and even walk away while I was trying to explain and told me he won't refund me