Hello, the following situation: Have been having problems with my brake for months. It sounds like air is getting out of the brake. Diagnosis from the free workshop was ultimately a defective brake power amplifier and most likely also in combination with the main brake cylinder. The parts could be procured themselves. I had the agreement with the car master that I order the parts on the internet and he installed them to me (original ATE by Mister-Auto) Now were the parts exchanged in the last days – today I got a call, that it would be finished but the problem still exists. When I arrived at the workshop (girlfriend was with me), one smelled the mood of the car driver already from a wide, that it is quite pissed, that it did not work (I myself certainly more!) Now the worst: In the test drive it was clearly recognizable that the brake is completely ineffective – when pressing through one does not notice any resistance What can I do now? Am I the fool now, because I brought the parts with me and he can argue by the fact that the parts had a defect (which I don’t believe) – or is he obliged to build the stuff back at least again to restore the original condition? Actually, the car should have finished yesterday but there came a lot more. in call from him that he has broken a part (inadvertently – whatever…) and now the shit…. I’m pretty pissed off about the whole thing and am really thinking about how to act now tomorrow, if the brake ventilation has still not been implemented properly. Does any of you have some tips for me? Stay friendly and find a compromise or if he remains stubborn and the repair has worsened everything (which is the case so far). t) if necessary to file a complaint or a lawyer? Am I obliged to pay the invoice amount (today 250 € have fallen) – can he charge this time for the improvement? Thank you in advance for constructive tips