Help charges from merchant: openai on my chime card: I do not have a subscription to open ai

They attempted 1000 dollars in charges but I froze my card I just happened to be looking at my phone when the first charge came out for 106 dollars after I froze my card declined multiple more charges between 100 to over 200 dollars all within 2 minutes. I filed dispute with chime they got back to me in 2 days and rejected my dispute which I've now reopened but they won't even tell me why they rejected it. What do I do??! I don't think the merchant is the real openai. So how can a merchant just take their name?? Please anyone help