Barnes & Noble Booksellers review: Customer service

I was in the Greenwood Park Mall location with my husband. We understand the importance of masks. He has one lung and it's hard to breathe with it over his nose, he was told to pull it up in which he did but he also wanted to tell the lady why he had it that way, he told her I only have one lung and it's hard to breathe and she responds by saying "well that's unfortunate" and then immediately calling security by saying "I have a customer causing issues." 100% unprofessional... We told her no one is causing an issue because he listened to you and pulled it up like you asked he was only explaining himself. But they also came over the pa in a mocking manner and said "everyone needs to wear their mask properly with it over the face and nose." No regards ty the fact he did comply. I feel like we were treated like criminals. It's hard enough with the world being so stressful with this virus that no one needs to be treated so ill... I want this to be addressed. I do not have her name because we were kicked out of the store but the employees will know who it was because most of the employees there were all looking and treated us like aliens without even having one concern about what was actually happening and the fact we was completely complying and only explaining why he had it off the nose to begin and was treated horrible. Who says well that's unfortunate to a customer only explaining a health issue even though he complied with the rule