Sounds to me like you pissed someone off and they told people you're a bot. Then they told people, and they told people, ect. Since you stayed in the same area for hours, some people just assumed you were botting. They probably didn't even bother to investigate it or anything. It doesn't take much for people to believe the worst. Sorry this is happening and if it continues to interfere in your enjoyment of the game you might just be better off switching servers. I would try riding it out for bit first. Hopefully everyone will find something else to grab their attention.