I have had my car 4 yrs in June. Which is when it ...

I have had my car 4 yrs in June. Which is when it supposed to be paidoff. They are still taking half my payment and applying it to interest. Majority of my payments are supposed to be going towards principal. I ask for a payoff and my balance showed $8500. I'm contacting my attorney. They are wrong on so many levels. Dont do business with this company you will regret it.