I agree that this level of oil consumption is not acceptable, but, based on at least 3 prior posts over the past couple of years, it is apparently not unusual for new or new-ish Audis to consume as much as 1 qt every 600 miles. And, those same unhappy Audi owners also reported that neither their dealer nor Audi on the corporate level seemed to share their concerns.
Unfortunately, I don’t think that your experience is an isolated one, and except for a Lemon Law claim, I don’t know what else to suggest. Start educating yourself about the terms of the Lemon Law in your state!