@Ayan984 you may consider following below tips on how to possibly dispute this amount and report the account take over.
-Compile any evidence that supports your claim that the booking was unauthorized. This could include your location at the time of the booking, your activity logs (if available), and any communication or lack thereof regarding the unauthorized booking.
-If the initial response by Airbnb support is unsatisfactory, ask to escalate the issue to a higher authority within Airbnb or consider reaching out to their support via social media platforms for more visibility.
-If there were financial transactions involved with the unauthorized booking, notify your bank or credit card provider about the fraudulent activity. They may offer additional advice or take steps to protect your finances. Keep detailed records of all your communications with Airbnb, including emails, calls, and messages. This documentation can be crucial if the dispute escalates. Hope this helps!