Warranty Denial for Bosch Washing Machine

The rubber seal on my Bosch washing machine's door cracked, and when I called for service, they dropped the bomb: "User error!" Can you believe it? Can you believe they had the nerve to ask for $1,500 for a part that only costs 250 TL elsewhere? They say it's a user mistake, but seriously, that's just ridiculous. Didn't the engineers who made this machine think about using a strong seal? Are you saying that the clothes got stuck and caused the crack? That's not a valid reason. This needs to be fixed right away, or I'm going to report this issue to the Consumer Arbitration Board. It's obvious that this isn't the user's fault—it's a problem with the design! This situation is completely ridiculous. Why would they charge so much for a basic rubber part? It doesn't make any sense. If they don't resolve this issue, I'm going directly to the Consumer Rights Board. This blaming won't work! The engineers of the machine need to reconsider their approach. I won't tolerate being treated badly and charged unfairly.