@Account Closed. I would take a close look at your car note, the one that you signed, and read through it thoroughly. Is there a chance that there is some "grey area," yes. Your attitude of just paying it off and moving on makes the most sense. However, if they are breaking any laws, you should seek some help. Sometimes, calling the local news station can "pull the covers" on some of these companies, and they could settle with you before hitting the news circuit.
With that said though, you bought a car with those terms for a reason: You were young and had no credit, which put you in a rough spot. If you have been paying the loan on time for 6 months, you will have already built some credit history (hopefully they are reporting to the credit agencies like they are required to by law), which will make this a useful loan (even though you paid through the nose for it) In a few short years, this will be a distant memory because you will have built credit solidly by following a plan. Having a "car payment," can be viewed as one of the worst liabilities to have, and for too many reasons for me to list:-) Feel free to reach out if you want any more help.