I had my first problematic customer today. He ignored my trainer telling him the bathroom was closed for the night, and tried to get me to open it for him.
I kept it polite but firm, I didn’t let the exchange rile me up. It lasted about 2 minutes and he lingered in the store - even though he told me he’s ‘diabetic’ and I recommended he go across the street to see if they would let him - and I suspect he took a picture of me when he thought I didn’t notice.