1. You can submit a written complaint to the local provident fund management department and ask it to file a case as soon as possible.

2. You can complain to the local government department and ask it to supervise the provident fund management department.

3. You can bring a lawsuit to the local court and ask it to deal with it according to law.

4. You can complain to the local media and ask them to report publicly, so as to put pressure on the provident fund management department and file a case as soon as possible.