Hi q damaged my car and want me to pay to fix it

Hi Q Umgeni damaged my car. I took it in to replace tyres and was told I need my discs skimmed and brake pads replaced. Afterwards my car stared making a loud noise when brakes pressed. Took it back was told after they checked that it was just dust and sprayed lubricant on it. The problem got worse and now when my husband took it in they confirmed that type of disc should not be skimmed and it was done unevenly and is damaged due to their error. They want to refund the money for skimming and want me to.pay to replace discs they damaged in first place. They put me and my family in danger by allowing me to drive around after I took it back to them just because I am a woman they **** to me thay it just needed lubricant. They should be replacing my discs without charge as they damaged something that did not require fixing in first place.