Overcharged!

Went to the mug and bean in Rosebank and ordered a lemon meringue tart (their tarts are R55 and cakes are R57) but I was charged R57 and got told that a lemon meringue is a cake. To add, the menu said "with cream or ice cream" (when ordering a slice of cake or tart) but I was charged for ice cream separately. It was false advertising - they should really say "add cream or ice cream". I still ended up paying for all of this which was absolutely ridiculous!