Bought a car and have issues

I recently bought a car at wiz motor... Cash .. I ask them if the car was in an accedent and they said no yet to find out it was also the car states 91 000km and today i got the history of this vehicle and it states that the car has over 270 000km on the clock ... This car needs a lot of work done that cost a lot of money what must i do ... Yet everything was solid when i did the purchase but i have been croocked