This can't be real. My chatgpt regularly swears at me. (I told it to in the customisation)
I've been banned from ChatGPT in the past, it gives you a reason but doesn't give the specific chat. And once you're banned you cant look at any of your chats or make a data request
ChatGPT has too many users for it to be possible to enforce any kind of rules consistently. I have no opinion on whether OP's story is true or not, but the fact that two ChatGPT users claim to have observed conflicting moderation decisions on OpenAI's part really doesn't invalidate either user's claim.