Complaint Review: Americredit

I purchased a vehicle in 2003 and it was financed thru Americredit.  The vehicle I purchased was financed at ~$26,000.00  with taxes and fees included. I ended up paying over $57,000.00 for this vehicle.  At the end of my 72 months, Americredit informed me that I owed and additional $4,500.00.  They could not explain where the additional charges came from but informed me if I didnt pay by the end of the month or they will pick the vehicle up.  Well, they came the next day and repoed the vehicle.  I paid the vehicle off and it is still listed as a repo on my credit.  This was 2 months ago.