Car broken after service

My wife took her car for a service on 19 Nov. She was informed that the brake pads need to be replaced. We took the car back on 25 Nov to replace the break pads, however, when we received the car back, it was unable to break. They informed us that the they need to bleed the breaks. We took it back after which they informed us that the master cylinder is broken and that they need to order it from overseas. Now we have to cancel our holiday because we don't have a car to drive down....but the worst part is that they don't want to take responsibility, or try to source it from within SA. I phone Hyundai Head Office, but they don't want to help. I've already paid R13,000 for the accommodation, which they can't be reimbursed at the last moment.