Poor customer service by a checkers manager

I have a checkers business card as i am in business I decided to go to the checkers at east gate mall as i was in that area and I took stork magarine

I got to the till and the cashier said its six per customer and i asked for tge manager to explain

Vincent the branch manager came ansd he was very rude and was not willing to listen (please check viseo footage on the 10th of May 2023 between 12:30 and 12:40

I showed him the checkers business card and told him we are not buying on a personal capacity and he told me he is not going to allow me to buy the magarine

I usually shop at checkers at waterfall corner and Mall of Africa and they are always willing to listen to understand and assist me; this was not the case with Vincent ,a lot of rudeness and the only person he listens to is himself

Please do advice him that in future he has to listen to the customer and understand why they are buying amd if he is not sure he should ask head office because this is a totally different scenario ,what is the point of me having a checkers business card if I cant use it ,this is such a huge inconvinience caused by an ******** manager