English, actually.
When i pay an engineer from a large multi-national company to fix an appliance, i will not accept a b/s face-saving excuse as a diagnosis to cover their laziness and or incompetence.
I checked the washing machine myself in August and by pushing down on the drum i could replicate the knocking sound pointing to a worn shock absorber.
However, as the video now shows, the knocking sound has increased significantly and is worse at a slower speed.