Europe car worst service!

I hired a car from the cape Town Airport branch and the car had rattles on the booth and in the front like cv joints or something is worn. I tried calling call center many times since yesterday and they answer after a long time then put me on hold when I request to be connected to the cape Town branch then I am in hold for a long time and then cut off I was really frustrated. I expressed my frustration to the agent and agent told she will place me on hold and then connect me to Paula the branch manager I was then told Paula is driving and I must email them my compliant... How is this going to help me... Now I had to jump in with family members and inconvenience them whilst I paid for a hired car... WORST possible service ever and I certainly won't be using them anytime soon! Hate to think what would have happened if this car broke down... And does anyone check the machinical conditions of these cars before it is given to customers?