Outrages Billing on items

At Milky Lane Mall@Reds. There is a kiddies waffle (Mr Waffle Head) where you get 3 little cones with smarties and stuff inside to decorate your waffle. That item cost R55. All good. We ask the waitress if we can just get a small ice cream and the 3 cups to decorate the ice cream, because my son does not want the waffle. After 5 min of explaining, because that was obviously above her understanding. She said okay. She came back with a small ice cream and the 3 bowls. Awesome. When we got our bill. She charged us R60 for that !!!! She charged us R15 PER SMALL bowl with a couple of smarties in. This is R5 more than the waffle with ice cream and everything but WITHOUT the waffle. When i asked her about it, she was so rude and just said, it is the extras. This was terrible and very unfriendly service.