Global Brands and Diesel misleading advertising

I received a message from global brands saying there was an 80%. discount on all brands @ Global Brands and Diesel outlets from 23 - 26 Nov. When I went to Diesel there were only discounts of 30% on diesel Foggie jeans. I have been a loyal diesel customer since their arrival in South Africa. I consider this misleading advertising and will never go back to any of their stores. Black Friday is a con used by retailers to lure customers to their stores.