Poor Return & Arrogant Merchandiser

Giant Hyper Every 2ndm/3rd week I drive from Wolseley to go buy stock for my Vending machine business I started in Sept 2020 after I got retrenched in July 2020. On 22 Feb I went in a hurry to go buy stock again, on my list was a box of #cadbury Lunchbars. When I got home and started unpacking, I saw the Lunchbars expired in Jan 2020 already so I kept it seperate to return it with my next trip. Arrived there today with the still sealed box of Lunchbars and my slip at the returns counter. Spoke to the guy behind the counter who called the Cadbury 'merchant' from the floor. He very arrogantly immediately accused me that the Lunchbars wasn't bought at the Giant Hyper Cape Gate even after I showed him my slip. He insisted to contact his company to check the Batch No and track where the bars was sold/bought. I said pls do and ten minutes later 'his company' confirmed that it was indeed bought as my till slip indicates. Mr arrogant Cadbury merchant then changed his story saying that they haven't had that batch no in stock since July 2020 so I couldn't have bought it there. So...back to the manager who then agrees with Mr Arrogant Merchant who accused me, a client, even after 'his company' confirmed my purchase that they can't return or replace or refund me. While I was standing there, a gentleman came in who bought a tray of eggs yesterday with a BB date of last week and he was helped immediately and the eggs replaced.

*** Giant Hyper ,Cape Gate