I mean, I can't really disagree with you, but it's a tough situation if the app automatically puts your team member number in and also doesn't let you delete it. It sounds like Target is forcing you to either boycott them or defraud them...I already tried, you can’t.
Since when was defrauding a business legal? Your lying to receive a discount...that’s fraud. Yea you have a 99% chance that you won’t get caught and nothing will ever happen, but that’s not my point here. My point is that it’s still ethically wrong and probably illegal.