Manager being funny

Today I went to woolworths in Somerset Mall. I took 4 lotions to the till end they scanned R0.00. Then I went to get more of the product because why not. The cashier called the manager and I was refused the products and was only given the four. I mean the products were on the shelf and what are they going to do with it? If you are not selling the products take it off the shelves. Then the manager started scanning all products on the original prices which were 3 times more than what stood on the shelf for all the sale products I had. I told him that I know the prices of the products and then just decided to leave the store with out my groceries.