Mistaken for shoplifting

I went 4 some shopping at a pick n pay hyper at princess crossing on Tuesday While in the store they announced that the store was closing and had not gotten much of the things I needed. I rushed to their deli but could not find what I wanted. They had already packed away most of the cooked food so I thought let me leave the shopping and come back when there's enough time to avoid rushing as the end up forgetting stuff. I left the trolley basket with a few items and left the store. As I was approaching my car I was called by two security ladies. As I stopped they asked if I had not taken anything in their store without paying, ordered me to go back inside and show them the trolley basket I was using for shopping. One of them wanted to search me. I was sooo embarrassed, everyone looking at me like a *****. When they saw the basket they started telling me that IN THEIR PICK N PAY I WAS EXPECTED TO PACK THOSE THINGS AS THEY HAD CAMERAS THAT WATCHED PEOPLE that take things and not pack them. I requested to speak to the manager who promised to call and never did. Instead some guy said they were looking into the matter never called again. CLEARLY THEY DON'T CARE ABOUT EMBARRASSING ME