I brought my car in to have a battery replaced und...

I brought my car in to have a battery replaced under warranty, however I was charged well over $400 for services that I didn't approve, not to mention that I drove my car in, but had to have it towed out, and the battery that I needed and requested to be replaced was not. I purchased my car here, and used to always have it serviced here, but never again will I. I also made an appointment, but my vehicle was there for two days. My service manager told me this is because they were busy, but what's the point of an appointment. I understand that they weren't going to be making money on a warranty replacement, but I am now out a lot of money, paid for a battery from another mechanic, and the repairs that I was charged for were under a recall, which means that Volkswagen paid them for the repair. I have a complaint lodged with the bureau of automotive repairs, but I have yet to get an explanation from the dealership.