Defected Products sold at Makro

Bought a Samsung microwave in Nov 2022, The Microwave has been repair 5 times, Makro book it in and repaired the PCI Board, Magnetron the fisrt and second time, 3rd time said Technicians cannot locate the fault and Samsung Came throught to my house and repaired the unit, 4th time the unit had been booked into Makro and again could not find the fault so samsung had to fetch the unit for repairs, 5th time same as the last 2 times, Issue is Makro say they only have 2 repairs logged on the system, Samsung has only 2 repairs {loophole samsung and Makro have to not replace the unit) I've asked Both Makro and Samsung to provide me with a technical letter stating to reasons why product is not defected, which they are refusing, meaning the know the unit is defected but wont formally admit it, till date management of the technical center has not contacted me, the service manager (Lawrance) states if liquid is not spilling client can live with a nosy microwave which the plate vibrates