Faulty Machines sold to the public

I purchased a Defy 10kg washing machine on the 24 of March 2023. The Following week I them communicated with the sales regarding a funny noise, she advised me that no it's not supposed to have any sounds. The matter was then reported to defy a technician was sent out and he said the motor was damaged. Defy then took weeks and then denied the exchange of the machine. They then sent out another technician ( the same guy came again ). The same matter was then given to defy again. Another technician was sent again and they did a safety test which was a rinse that does not have any form of noise when the machine is on. I then did a proper wash with other setting only to find that the same noise I've been raising is still there. I called defy again and spoke to Robyn. They then sent out a technician yet again I ended up not even letting them in cause this is a nonsense situation. I cannot have 4 technicians coming to my place checking and confirming the same thing regarding the machine. Defy is running away from doing a direct exchange on the product and falsely selling items to customers that