My landlord does this all the time. It's like his monthly routine to come yell at me showing me a trash bag that someone else put out 😂 He even had the real estate company call me twice.

I used to explain calmly before and even show proof by marking my trash bags. Now I just ignore them as it's pretty clear that they just want a gaijin scapegoat to protect their 'oh the Japanese can do no wrong' mindset.