Woolworths canal walk

I'm very disappointed in Woolworths Canal walk manager. I am an essential worker and asked if I can enter the shop and skip the line, he looked at me head to toe and had the audacity to ask what do I want to buy. I told him I need to pay my account, he then no sorry stand in the line & stated you are not on duty(which he assumed) . How on earth did he know that, I had all the proof with me but he was interested.