Its very unfortunate this happened on a proffessional platform like upwork. You can report to upwork support for them to resolve the issue.
I would like to advice my fellow freelancers to be professional and respect clients because they make this platform grow.
I'm sorry to hear about you experience with this freelancer. I checked your account and see that you are already corresponding with one of our team members regarding this issue. As confirmed by the agent on the ticket, the freelancer has already been reported to the appropriate team.
The agent told me that he reported to the appropriate team. But a week has passed and I have not received any messages, questions, results from this team. How can I find out the result?
Upwork might not provide you with additional information. You have no further obligation to work on this matter. You have already provided a service to the platform by reporting inappropriate freelancer behavior.