Hi, I bought a second hand Audi A4 from a dealer in October 2023. I got a 12 mth warranty with it. It completely shut down on the motorway - every alarm/fault etc. It’s currently in the garage getting fixed. They rang to say come collect it but are refusing to tell me what was wrong with it or what repairs were done on it. This has alarm bells ringing for me! They’re saying they don’t need to tell me as it’s fixed for free under warranty. I haven’t collected it yet and I’m in their courtesy vehicle. What should I do as I’m concerned I have a dud car on my hands. Thanks