Nope you totally did the right thing. Bins are not assigned to anyone. There are common courtesy things that can be done to enable more folks to get all their stuff up there, but if you think that your seat = one bin, then you need to lay off whatever it is that you are smoking before boarding. Mr Huffy must have been huffing some good stuff as he knows better than that, just trying to take advantage of someone, very unbecoming. It is sad that no one ever tries that crap on me (maybe because I am somewhat intimidating looking) so I could elucidate them on the rules of the bins.