S.A. police didn't help a woman when she was hijacked

I called the police for help because my mom was hijacked and she got hurt. There was three people. I told them to come and told them the location and they just hang up on me. So father called them twice and they hang up on my father. Eventually they come but they just stood there did not ever try to get the fingerprints on the car The police of S.A. don't help peolpe