Bosch WGA142X0TR Door Noise - Extended Warranty Refusal

I’ve been experiencing a noise coming from inside the door of my Bosch WGA142X0TR washing machine for about a month. The product is still under both the standard and extended warranty. I called Bosch authorized service center, and when they arrived, they said a part inside the machine was broken and claimed it was due to user error. However, I have always used the machine normally and never interfered with the door in any way. The service report also mentioned the broken part. When I purchased the extended warranty, I was clearly told that all types of malfunctions would be covered and that I wouldn’t face any issues. Now, they’re saying the fault isn’t covered under warranty and are demanding ₺5,950 for part replacement. They also asked for a ₺700 service fee if I don’t proceed with the repair, which I refused to pay. I contacted Bosch customer service, but they also insisted it was user error and didn’t help. I feel wronged because this issue should be covered under the extended warranty, and I was never informed otherwise. I request that the repair be handled under warranty and that all charges issued to me be canceled.