"Not happy"

So I visited today for my 11 year old boy I am disabled with feet and leg ulcers which is bilateral legs in compression because of my wounds I was sat there for a little while no where near anyone just me and my boy when the receptionist comes up to me and tells me even though I am exempt to wear a face mask I had to go out side she said a dr said it but never saw a dr say anything I said what about my feet im not supposed to stand for long and im in pain they was also aware of my husbands passing recently to she said my lad was ok to stay inside while I wasn't and kept shrugging her shoulders so I went out side for her 15 mins later for her to say Natalie would u like a chair so I said no .. its disgusting to treat someone disabled like that some people are a jobs worth damn place needs to shut down