Samsung Dissapeared!!

I bought a Samsung washing machine in May 2019 and after 2 months I noticed black stains on our clothes. I phoned and I was advised to do a drum clean with vinegar. And it worked. 4 Months after that I saw black stains again directly after I did a drum clean with vinegar. The technician came and noticed that the pump was faulty because it made a grrrrrrrer noise. A week after he came to replace the pump. 1 month later the pump started to make the same noise. The technician came again and replaced the pump again. 2 DAYS after that the 3rd pump started to make the same noise AGAIN!!! After numerous calls, Samsung just ignors it. I get absolutely NO feed back from the technician or Samsung. So now they dissapeared and I am stuck with a brand new machine which is still under warranty which had 3 pumps already but still makes the same noise as it did in the beginning. I send audio files and videos to Samsung and the technician of the noise it makes, but nobody responds!! If I could give half a star I would, to Samsung and the technician.