Oregon has a regulatory agency specifically charged with protecting people who are not being treated correctly by insurance. On behalf of the insurance buying public the Oregon Division of Financial Regulation provides services to help ensure insurance companies treat insurance buyers properly. They can't provide the services of an attorney but they have useful information related to auto insurance here and even have an online complaint system located here

ORS 811.720 requires that you file a report with DMV:
(a) within 72 hours if you are a driver pursuant to ORS 811.725,
(b) as soon as you learn of the accident if you are the owner of the vehicle pursuant to ORS 811.730,
(c) If you are a passenger pursuant to ORS 811.735 if the driver is physically incapable of making the report.

This requirement kicks in if:
(a) Damage to your vehicle was over $2,500,
(b) Damage to property other than a vehicle was over $2,500,
(c) Your vehicle was towed from the scene as a result of damages,
(d) You or passengers in your vehicle were injured.

If you need to fill out a report, just follow this link:

Oregon Traffic Collision and Insurance Report