Proceeding to the question: Are you going to follow up with the management to see if the issue can be resolved - train their employees better. If you let it pass, then you allow perpetuating the problem - ignorance gets a free pass.
Insofar as the difference in response to your appearance, that is human nature - if it waddles, quacks and has feathers, they'll presume it is a duck. Since we are the ambassadors of OC, many will encourage projecting the best (yes most acceptable) image.