bad adverti*****t

We were 6 people that sat at a table and requested the waitress to explain the burger special - buy 1 burger get 1 burger free. Unfortunately the waitress could not firstly explain the special properly and secondly it's the first time I hear that they have changed the special but on television it mentions that you can choose any burger on the menu and get the same burger for free however this branch only sells the roll and patty only R65.90 and R15.90 for extra cheese and mushroom sauce per burger. I think that spur should of at least notified their customers of the drastic changes in price and adverti*****t. After waiting for a seating at the table after a whole 1 hour.