What happened, I feel uneasy

I don't know. This person came into our discord and was just negative from the start. Then I started getting angry messages from him. He was upset because (i assume) he wanted the price to pump higher. I can't control the market. Every few days i'd get another message from him, angry and cursing at me. I tried my best to be friendly with him but I have my limit.
I have considered letting him back into our discord. These are stressful times and I'm a forgiving person. BUT - he'll have to apologize to me first. If he can do that, and if he can behave himself in our Discord, then i'll unban him and welcome him back. Otherwise, I simply have no choice but to keep him banned. We have a happy and friendly community. I can't allow such negativity in there.