Faulty DEFY Top loader washing machine

I bought a DEFY 14kg top loader washing machine in February 2023. The machine was running smoothly for the first 3 months and the bucket started making a huge knocking noise every time when it stops after spinning. I reported the matter to Defy and they send their technicians 3-4 times but the machine would be quiet for a month then start again with the noise. I recently reported again and they sent a technician that claimed the noise is normal, yet the machine was running quietly when I bought it.

To give you an idea, if the machine makes the sound and you are not aware of it you would think someone is breaking into the house. I followed up with DEFY again and ask if they can at least replace the machine since this was a problem that started in less than 3 months after I bought the machine and they said there’s nothing wrong with the machine and they cannot do anything, I have to use it like that.

I am very disappointed with them, considering the fact that this seemed like a factory fault that I picked up early and the machine is still under warranty.