Samsung machine broke down less than six months

bought a Samsung washing from a builder's warehouse (WITBANK) 4th of November 2021on the 29th of March 2022 called the store to complain about the machine which was leaking, they referred me to Samsung which they sent a Technician on the 11th of May 2022(Wednesday) to fix the machine. But on Friday the 13th the machine stopped working while was doing my laundry it just went OFF.saturday the 14th I called Samsung to tell them about the problem and I told them I would kindly require an exchange of the machine because its giving me problems but it is less than six months, Monday technician came he said hes machine can not detect what is the problem with machine, and I aslo explained to him that I kindly request an exchnage. Ever since the 14th of May SAMSUNG has not been able to advise on my REQUEST. the only thing is they taking me from pillar to post no clear answers are given.this cold weather have to do my laundry using my hands. This is really painfull