Pretoria west cash and carry false Advertising

I travelled all the way from Kempton park to buy Simba chips advertised as special from 10 June - 23 June for R127.99 but I was told I can only get them at R250. Reason special was cancelled , only they forgot to inform us online of that fact. Manager Dumisani could not resolve the issue, he was incapable of introducing himself as the manager I had to ask for his name , he is not a problem solver at all. I was told an error occured on the advert, however I got the price online on PDF format on the 16 of June.