Here, my move:

Well, yesterday I took my car to the mechanic because it was making a strange noise, and I couldn't know what was wrong with it. I've been very stressed lately, so I decided to let the experts take care of it. I told the mechanic to check it and call me with the diagnosis.

A few hours later, the mechanic calls me and tells me: "We found the problem and we fixed it." I was a little surprised, but I thought that was what they did, so I asked him how much it would cost. He told me: "300 dollars for parts and labor." I told him: "Wait, have you fixed it yet? Without asking me first?" He seemed a little puzzled and told me: "Well, we thought it was something urgent, so we just did it."

I wasn't happy, but I paid, and when I went to pick up the car, everything seemed fine. He no longer made strange noises, but here's the problem: I hadn't really given them my approval to fix it. I understand that they probably thought they were doing me a favor, but I felt they should have asked me.

When I told them about my concern, they acted as if it wasn't a big problem, and now I'm starting to doubt whether I went too far by getting angry or if they're really right to feel like they crossed a line by fixing something that I didn't authorize them. Am I the idiot here?