What is banning Tambourine going to do? He's just going to make another account.
He doesn't have a life, obviously, so he sure as hell doesn't mind jumping ban after ban after ban. Just IGNORE him. Easy as ****. Imagine if everybody who doesn't like Tambourine, put Tambourine on ignore. He would have no one listening to him, and he'd eventually stop his ********.
Think about it.