POOR SERVICE

I Bought I20 on the 07/4/2015 i asked to see file for 5 checks that were done servicing the car,they refused because they knew it was not serviced ,i hv only one month now driving a car and brakes are finished it has a strange sound when driving,i went back i was told i have to PAY R600 FOR SOMETHING THAT THEY WERE SUPPOSE TO DO BEFORE SELLING THE CAR,POOR POOR SERVICE...