Bad Attitude

I recently bought a car from VW Bryanston. I was not made aware that the car still has a maintenance plan active. I paid for the service last week and now I'm battling to get my money back as the maintenance plan was supposed to have covered the service but because I was not aware the plan was still active I paid it myself. Today I called innovation to try and claim my money back, Rochelle told me that I must contact the previous owner and she must be the one calling in for the maintenance plan query as she is the registered policy holder. I tried explaining that I bought the car at the dealership and I need the policy transferred over to my name. She kept switching her microphone ON and OFF and eventually hung up on me after she took my number and promising to call back. I'm still waiting for her call. I have verified both the vehicle and previous owners details but still no assistance. Where am I supposed to get hold of the previous owner? I need my money back - can someone please help me!!!!