Strauss Auto Swindled by Strauss Auto North Bergen, New Jersey

I was swindled by Strauss Auto center At Kennedy Blvd in North Bergen NJ . I bought my 03 Nissan Pathfinder for shocks and strut work. After service was rendered the ABS light came on. I immedietly told the mechanic and supervisor on duty before driving out. They told me that it was my responsiblity because the mechanic alleged that the ABS lights were on before driving the car into the shop and that he wrote it on the report. They covered themselves when they realized they damaged the vehicle. Before working on my vehicle I told them that I wanted them to tell me if the vehicle had any other problems before they started work. All they ever told me is that the rear rim was damaged. Now im stuck with a $800 dollar bill, cause Nissan told me that the sensors were damaged.