Hisense 305L rusting inside.

I bought a Hisense 305L on the 01/01/2022. I have noticed that the freezing compartment inside is rusting. I have contacted Hisense SA they informed me its only covered for 6months. I do stay in KZN thigs do rust, on the outside but not even in as little as a year. But this in on the inside of the freezer. really now!!!!