Bad Bad Service

Im so sad and disappointed by the way my car was serviced at Audi, it was taken for major service whereby some of the services were not done and let me to have a serious damage on the vehicle immediately a week after the service. If major service was done correctly i was not gonna get this damage im with and costing me close to 46k. My car got broken with something that was supposed to be detected and prevented when the major service was conducted. Tried to speak to Audi regarding my matter instead was old to tour my vehicle with my costs to their dealership so that it can be checked again. I dont want to see Audi anymore, im fine with it...... i paid lot of money for major service that was done by them but a week after the car got broken with something that was supposed to be serviced. Now when i want fix the damage they charging me 46k.