All staff, from Helpers all the way up to Admins, have strict regulations and guidelines that we're to follow. In the case where I moved that stuff for you, it was because those chests and stuff were actually in your home. In the other case after that, no admin here would have removed those items, because if I am understanding correctly, that home was one that you had built for a player and gave to them.
The three-day ban was because you were becoming very, very persistent with your requests, after being told each time that those specific things would not be removed until the owner had been offline for much longer than 20 days.
Like RubensCherub said, 20 days is not very long for someone to be away, we generally like to wait at least 60 days before even considering doing anything, unless there's a very good reason not to wait that long (such as a player's stuff being inside your actual home).