What type of attorney should I hire after a hit-and-run collision where I sustained no physical injuries?

I suffered an auto accident on August 7 this year. A well-known company in my location hit my vehicle from behind. The police accident report identifies the other motorist completely responsible for the collision. My car remains in the workshop where technicians have not started performing any repairs. My insurance provider along with the other insurance companies have failed to take action. My car accident has left me needing to pay for car rentals while I remain jobless. Everyone involved in the situation appears to sit idle. What action should I take now?