Huawei GT3 Pro Watch Took in Water and Broke After 10 Days

I bought a HUAWEI Watch (GT3 Pro 43mm Ceramic Case - White Ceramic Strap), and it broke down on the 10th day of use due to water getting inside. However, the watch is supposed to be suitable for use in the sea and pool. I used the watch exactly as instructed and never exposed it to conditions beyond what was advertised. Huawei Turkey refuses to take any responsibility and instead blames me for the issue. The authorized service is demanding a repair fee that is twice the original purchase price of the watch. In my opinion, Huawei is selling repaired or previously used products in Türkiye—otherwise, why would water get into a watch that’s supposed to be water-resistant?