LG Microwave Faulty Magnetron

I bought a top of the range LG Microwave 56l Neochef end of 2019. It has been to Xecutronics 5 times for the Magnetron. The last 5 months the "NEW" Magnetron broke 3 times. (Nov 2022 - March 2023). Now my question is, why does LG allow this. Are they not supposed to investigate if the parts used, is in actual fact new parts. I have never heard of a Magnetron braking 3 times in 5 months. LG, I will also post on your site, but this needs to be investigated. I'm waiting for the LG agent to call me for a solution.