Autobosch Clinic Germiston Bad Service

Autocare Clinic Germiston Fetched car : 25th Feb Car stopped :26 Feb and towed it back. Workshop refuses to pay for the costs saying that its not what they fixed. Just under 24 hrs I fetch car it stopped working and they refuse to fix it unless i pay. When car leaves workshop after you fix are there no guaranters or warranty This is so unfair. They absolutely do not want to take any accountability at their own costs . When they stripped my car twice did they not see this problem. My car was with them for 3 months.