You can complain to the higher authorities of the police station if you run away.
However, the police station has no relevant legal basis to detain the driver, and even the traffic police can't detain him. This is a problem that needs to be prosecuted in court.
It's true that the driver involved in the accident doesn't pay compensation. You can sue in court and demand criminal and civil liability. Moreover, the traffic police only need to issue an accident liability certificate.