Outrageous experience at Shoprite Windsor Glen

I had an unfair unexpected treatment as a regular that always buy at shoprite especially the one at Windsor Glen . Just went for quick shopping as always around to eight in the evening as they close at 8:00pm was left with atleast 20 minutes before closing time , so i quickly drove got there on time manage to grab the stuff i need for the evening then head to the tills ,upon paying i realized i only got my extra savings qnd i left my bank card in the car .i asked to run outside to fetch my card and i left on my way security guy asked where am i running to told him i am quickly getting my card. And he said will lock for you to me it was like a joke coz i am a regular there , i ran to the car fetched the card upon coming back the door was closed indeed i waited and asked them from outside whats happening ? they hust continued locking and i couldn't believe what's really happening then i drove off back home without anything.