Bought a used car November 2013 from a dealership. Since then it has been in the shop 5 different times. I asked to be put into another car and they told me I was able to trade it in. So i then took it to another dealership to see if i could trade it in and i was told this car was unsafe and unreliable due to it being in an accident. (Structural damage stated on carfax) They told me to take it back to the dealership. I then took it back to the dealership and they told me they didnt know it was in a accident due to the fact they use another form of carfax that stated no accidents. They dont want to take responsibility due to the fact they sold me an unsafe vehicle and knowing i had children in it. What actions can I take?