Recently I got banned for griefing (I didn't grief anything) and all I did was talk to staff, then I got banned.I wasn't making fun of them so I wasn't being disrespectful.
Even if you did be rude to staff they wouldn't ban you and put it under griefing, they have logs that show what all the players do, you must have broken something of someones, maybe without realizing it.
But in saying you've been caught stealing, swearing, being rude to admins, harassing other players, so it's kind of hard to believe what you say =(