Good afternoon. Your scenario sounds like the typical insurance company tactics. They want to make you feel like you do not have a case worth pursuing, and they can get out by paying you the bare minimum to settle. In Ohio, you are entitled to compensation for all medical bills proximately caused by the accident, regardless of the severity of impact. So if you can show that you would not have needed the treatment but for the auto accident, then you are entitled to be compensated for those bills. The only way to stop these kind of tactics from insurance companies is for you to fight for your rights, and demand that they pay you fair compensation for your injuries, including all medical bills, all lost wages, and for your pain and suffering. Retain a lawyer, and I am sure their attitude will change.
Best of luck.