Unresolved Issues with Preowned Audi A6 Purchased from Audi Autohaus Centurion

I recently purchased a preowned Audi A6 from Audi Autohaus Centurion, and unfortunately, the service I've received has been quite disappointing.

I reported two issues with the vehicle:

The speakers are damaged, causing a crackling noise. There is a noticeable knock when reversing. Despite sending the vehicle in for repairs, which took over a week, these problems persist. This leaves me questioning what was actually done during that time.

Additionally, I am not impressed with the level of service I’ve received from the sales staff and the sales manager. I expected a much higher standard of service from a reputable dealership like Audi Autohaus Centurion.

I hope these issues are resolved promptly, as this experience has been far from satisfactory.