Terrible customer treatment - Manager Sunwardpark

I got to the sunward park store and a lovely special on pasta sauce 2 for R40. Took 4 jars and other things and proceeded to the til. When teller rung the jars it said R100 for 3. I showed her the price I saw and was wiling to pay. She called the manager, who was outright rude and condescending; saying thins like: I am the manager here and I tell u what the price is". Necessary? I don't know, maybe that's how food *****s wants to be known for - terrible customer treatment. Anyway, I suppose I have a choice, I can take my money else where. Wonder how many jars of sauce they sold for the "manager's price" not what's advertised.