Pathetic service

Lets start by ignoring the fact that a new Audi Q3 had to go back to the garage for repairs 4 times (twice on a tow truck). It is now the second time in less than a year that my car's petrol cap wont open. Last time I did the right thing and called upfront to make an appointment, which led to me waiting 14 days for Audi Centre Cape Town to take in the car, leaving me without a vehicle for 2 weeks. I find that somehow unacceptable! The same problem occurred 2 days ago and I decided to drive to Audi Centre Cape Town and leave the car there. Needless to say I was not happy and the service manager, instead of trying to calm me down, decided that an attitude was the appropriate response. Fast forward 2 days and I have not had a call from them to update me on the status, I suppose its my job to follow up?