bad service and costing me more money

Bought a nice 2nd hand Kia 2004 model, on a Saterday drove it 70km and started to make noise I took it back on the Monday and they send my car to koenix in Edenvale and only got my car back on Thursday evening drove my car Friday and it totally broke down they picked it up and went back to koenix and they had to replace the whole motor, another week I only got the car back I drove 127km had n treble oil leak. I phoned Auto supreme and told them about the bad luck again. They phoned me back and told me that I have to pay for the new problem when I took it to koenix they had too take out gearbox and replace the main oil seal that I'm still thinking is leaking and then again 2 days later battery not charging they tell me not there prb. I bought new battery by and 2 days later same problem I took it too kwik fit and all my earth cabels loose cause bolts are strip bolts missing plugs broken and I got fotos of all plugs that I took before they replaced motor air filters loose get car back dirty full off oil marks ,so car stilll broken after car cost R45000 and all extra cost R20000 too fix and no help