Brault and Martineau review: Samsung stove

I bought a samsung stove model ne6318751ss7ac in sept 2021 and the oven bottom rack is completely rusted, and after contacting samsung they told me it is cosmetic and is not guaranteed, then I called brault and they told me the same thing. This has to be our 10th stove and have never had this problem, product is either defective or made very cheap but sells very expensive.