RPM Auto Sales Incorporated

I currently own a 300M that I got ripped off by RPM. I was first paying $230.00 bi-weekly but soon after the engine went out I now am required to pay $300.14bi-weekly for a car that has the check engine l was first paying $230.00 bi-weekly but soon after the engine went out I now am required to pay $300.14bi-weekly for a car that has the check engine light on everyday after they fixed my car. So that means I pay 600 - $ 900 per month for a car that is not even worth $9000. I would liek to say thank you to them and ask the question what can we do about this kind of company? More