Sold car that was in accident and that was not disclosed to me prior

I bought the used VW golf 6 from the dealership, the vehicle was looking good and driving well when I test drive. My suprize occurred when I started to see the airbag warning light. Then I took it to be checked. I was told the car was involved in the accident and the airbag sensors was bridged and when I purchased the vehicle I was not told all that. Now the dealership sales person hangs calls on me and tell me to get off