Dorigoni Volkswagen Trento

I took my Golf to be serviced at the dealership on 6.11 last. reporting that on a couple of occasions the clutch pedal, once released, did not go back up completely. Having collected the car the same day, I was told that no anomaly had been found and that everything was fine and to come back if the defect occurred again. A few days later I left for abroad (Switzerland). Everything was fine (fortunately!) up to the destination, but when we restarted the clutch pedal was at the end of its travel and I necessarily had to call a tow truck to have the car taken to an available mechanic. Here, after dismantling the piece, it was found that the clutch disc, the flywheel and the internal pump needed to be completely changed. I would like to point out that, from what I have been told, the fact that the pedal causes problems when going back up is one of the main symptoms that the clutch is damaged. It also emerged that the brake fluid was completely black instead of yellow and that was also changed. Now, having fortunately averted the danger of stopping on the road and having incurred costs that were certainly not limited, on my return to Trento I went to the dealership to tell the story of what had happened. No formal apology on their part, but only the consideration that a more thorough check of the clutch would have entailed more work and costs; but then why not warn me and allow me to evaluate the matter? When faced with the "question" of brake oil, there was no answer. At this point I ask myself what is the point of having a service done in this workshop, paying handsomely for it????