Dishonest management

While shopping yesterday, came across tinned tomatoes priced at R12,99 on the shelf so yay, loaded 12 tins into my trolley. At the checkout counter I saw that the tins were registering as R25,99, upon which I queried the price. The packer was sent to confirm the price, and after returning to the counter, the cashier tried to correct the price at the till, but couldn't get the transaction right so she called the Supervisor. The Supervisor also wanted to confirm the price on the shelf and upon her return and "yara-yaraing" in her African language with her colleagues, asked me to accompany her to the shelf to confirm that the price was actually R25,99. The price was now higher and had been changed leaving me to query if I was off my head as I had definitely seen the lower price otherwise I would not have packed in 12 items. I apologised for being incorrect, subsequently left the 12 tins but upon reflection, realised what had transpired. The packer must have confirmed that the price was R12,99, otherwise the cashier would not have tried to correct the transaction. The supervisor had obviously changed the price and made me to feel that I was in the wrong. SHAME ON YOU SPAR for your dishonest dealings with your customers! Next time, just be honest, say that a mistake had been made in the pricing, but don't make me out to be in the wrong!