Accused of theft

Good day,

Last week i went to Dischem to get some essential that i needed. One of the essentials was bio oil. As i approached the till i decided to leave the bio oil because i didn't think i need to get it anymore, ill get it in two weeks time. So i went to the till and paid for the rest of my stuff. As i leave the door a man (Lucky Maduna) askes wheres the bio oil, because he did not see me pay for it. I told him i left it on the shelves. He look at me as if i stole the item and he did not even apologies for the inconvenient and he did not even seem bother to just come and accuse me of not paying for stuff i did not have... i felt violated and belittled to actually think they thought i stole an item. There are dozen of cameras in the shop so how do you not see wen we leave stuff in the store and you wait to accuse us once we leave the store.? Livid with Dischem Benmore.