"Felt targeted "

Was using costa today to buy my mum a drink who had just had a stress echo done and had to wait half an hour before she could leave, whilst waiting in the queue a man behind me who was staff for the hospital not sure which department but we’ll known to other hospital staff and costa staff made me feel self conscious and told me I wouldn’t be served without a mask on, when I am exempt due to health issues, and didn’t say it once but several times making me feel pressured into putting one on, which made me feel as though I was suffocating, due to anxiety and anxiety attacks, asthma and other health issues as well as feeling dizzy and chest pains from the heat, I don’t appreciate feeling targeted and pressured by hospital staff it was none of his business in the first place never felt so humiliated and anxious when trying to buy my sick mum a drink