Bad buying experience

I purchased a Smeg sink, and within just a few weeks it began to change colour. I reported this issue via email, but instead of addressing the defect, Smeg attempted to shift the blame onto me. They then sent a consultant to assess the sink, who tried to clean it using only vinegar. I was informed that the assessor would return with the correct cleaning materials, as they had forgotten them, but no one ever came back. After following up again, I was told I could receive a discount on a second sink. This is unacceptable, as I requested a replacement for a defective product, not to purchase another one. I am extremely disappointed. I have already purchased a Smeg gas hob and oven for my kitchen renovation and was planning to buy the remaining appliances to keep everything uniform. Unfortunately, after this experience, I will not be buying Smeg products again. No, thank you.