bad attitude from staff and advertising wrong

So today I went to place an order that Wimpy Irene Mall advertised which was 4x burgers with chips and 2litre coldrink for R159.90. Earlier that morning they said we can place it for the afternoon as I wanted to treat my staff. So when I get there they told me sorry its not available and its only available next month. There is no date on the adverti*****t to say thatvits for next month or so. So when I asked for the Manager this lady pulled up her shoulder and said I dont know and I dont care. Then another waiter came and scream at us. As regular customers we have been treated like ***s by staff of Wimpy. I will never order from them. And another thing they ALWAYS get the orders wrong when we order or sit down. And im not the only one complaining about wrong orders and rude cheeky staff. Ive heard other people as well but nothing has been fixed... thank you wimpy irene mall for showing away customers.... LOYAL CUSTOMERS!!!!