APPALLING SERVICE SUZUKI CENTURION

I have just received such an appalling service from Suzuki Centurion. I dealt with a lady called Jennifer, she was so unpleasant, so unprofessional and such an oblivious person to deal with. I have taken my car to Suzuki Centurion 3 times but have never experienced such a dreadful experience. I took in my car today for 75 000 km service, upon booking for it i was only asked for the VIN number and my car was booked without any further details from me, which clearly indicated that they have all my details on their system. When it was time to collect my car I was told by Jennifer that I need to pay R2704 , which caught me by surprise because as far as I know my car is still under a maintenance plan. I tried to explain this to Jennifer but all she did was lash at me. I was left astounded by this behavior. Decided to call the maintenance plan company only to find out that the same Jennifer had already put in a claim for this. I decide to call her back, guess what, her behavior had not changed one bit, only this time she told me I can take the issue up with whoever I want for all she cares. See me going back to Suzuki Centurion again. I have never received such ********** service in my life especially from a dealer. I hope she sees this and learns a better way of treating her customers.