My CHM Ford bad experiences

Bought a used car from CHM Ford Randburg, but it's been a headache. Every time I take it to Hatfield for issues (because of distance), they claim damages aren't covered due to to the car having supposedly been in an accidents and give me crazy repair quotes. Randburg says otherwise. Even had to buy a battery despite warning them about issues early on. When I ask Hatfield for details, no clear answers so I can find a way forward. Now the cooling system failed, and it's not even safe to drive back to Randburg. Terrible service all around.