This is the "weasel worded" outcome from Mercedes Benz USA after several attempts (answering Surveys, EMail to MB USA etc.) to resolve an over billing and a brake warranty issue:
"Thank you for your additional email.
We regret your expressed frustration regarding your communication with Mercedes-Benz of Seattle and apologize for any inconvenience experienced.
Since Mercedes-Benz dealers are independent businesses, they are responsible for their own operations and Mercedes-Benz USA, LLC isn't directly involved in their retail sales transactions. Your feedback is valuable in gauging the achievements or shortcomings of this organization and our dealer network. We have shared your comments with the appropriate parties in this organization.
We recognize our apology will not negate the circumstances that prompted your correspondence, but extend it most sincerely."
No interest in dealership service is not what one expects of a "quality" brand.