Im sorry but if you ask someone permission to use their plot and they politely decline and then you basically tell them "screw you i'm going to do whatever I want" is EXTREMELY RUDE. Honestly speaking, I don't care who called someone this or that, its the fact that you have no respect for other people. In the real world people are going to tell you no and you're just going to have to deal with it and move on. Maybe if you were mature, something that is most likely new for you, than you wouldn't be dealing with this backlash :)