Spirit Airlines – Fraud charges to my account totally over $6000

I have fraudulent charges from August and September of 2023. I have talked to multiple people, have sent emails and regular mail explaining my situation. They have agreed that they are fraudulent as they can see that the charges were made in my name, then cancelled and refunded in someone else's name! In February 2024 I was told that Guest Relations would look into my situation. I have sent them bank statements with the fraud charges. I haven't heard anything from them since February, almost 4 months ago.