Bad service

ook my car to vw Polokwane as it had faulty warning.took them 3 weeks to fix it.got the car on Tuesday and Friday break pads were finished.took car back to vw and was told they don't have parts.they could not even help me with mobility as i had plans outside the province.VW does not take our safety serious how do they release a car without inspecting it?how is it that a car(1yr old) could have 1 breaking pad finished and others are fine?its not even a month since my first case with vw.their rude VW-SA case managers are even free to tell me they don't guarantee my mobility.and that they cant help me.what kind of service is this???