Worst service center/ mechanics ever. I should hav...

Worst service center/ mechanics ever. I should have read the yelp reviews. These guys are hacks. Had my Audi for 4 days did zero work on it and tried charging me 600 dollars to tell me they cant figure out my electrical issue. I asked if they actually test drove my car because I learned from a previous experience there to take a photo of your mileage when you drop it off. They swore they did...lies. they even wrote a fake mileage on my paperwork stating the car had more miles than it actually did when i picked it up. These guys are the Audi dealer and I left with an unfixed car and 4 days of missed work. Avoid at all costs. I even left a message with the manager who still has yet to return my call...the best thing I can do is warn others