Misleading advertising/ signage

I went to the Body shop at Nicolway today to purchase some Christmas gifts. At the middle front of the store there is a sign which advertises “3 for 2 on everything” with multiple coloured box underneath it with 2 or 3 products in each (the same boxes appear on the sign). I tried to pay but was informed that these are considered gift boxes and are not part of the promotion (in very small writing it says gift boxes are excluded). After much debate with the cashier i ended up buying the individual products to benefit from the 3 for 2 (it would have cost R100 more to but the boxed versions). This advertising is misleading at best, and put a dent in my Christmas shopping fun. My advice..just be transparent with your customers and don’t try and trick them