problems with total loss database

I have a bad total loss valuation for my car (IMO) from an insurance company using Autosource. I have found proof from data from my BMV that they are changing the values used for the comparison cars. The cars used (32) have numerous errors and many do not seem to be comparable. Nothing from my car was deducted for condition and value was added for maintenance and low mileage, yet there are cars on the list with over 100,000 miles with no adjustment. In addition, adjustments made to real sale price were lowered on most of the cars. There are cars without comparable options such as auto transmission, heated seats, sunroof, etc. There are fleet cars, auto auction cars, and repossessed cars. I sent local comparison cars and was lectured if one small option was not on the car (like a woodgrain trim). My car was loaded and there were only 3 or 4 options available of which I had 2. I feel somewhat confident I can probably re-negotiate the second settlement offer, but I am so angry that this is probably happening to many people. Unfortunately the amount of loss makes it almost impossible to pursue legal action. (even small claims cost to file and by the time you put in the work you don’t break even). There have been lawsuits filed against a similar company CCC but I find none against Autosource. There is bad faith here and maybe even fraud. After I was treated in a condescending way by my adjuster I was so angry I spent allot of time documenting all the errors. Does anyone have any idea what to do?