Essential worker

I was at Shoprite in kuilsriver during my lunch and according to my knowledge essential workers should not be standing on queues but because O work in a bank and I dont wear a uniform I was told I need to queue. I've been to all the other stores and I was allowed to get in but Shoprite in kuilsriver you must a wear a uniform regardless of the letter from my employer. I stood on a long queue till my lunch time was over. Why are we allowed access from other Shoprites? Not all essential workers wear a uniform